Home / 685,093,777.96-945,430,349.82-371,827,996.76

Finding the Fourth Proportional to 685,093,777.96, 945,430,349.82 and 371,827,996.76

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Solution

The fourth proportional to 685,093,777.96, 945,430,349.82 and 371,827,996.76 is: 513,123,143.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,093,777.96 : 945,430,349.82 = 371,827,996.76 : x
  2. Step 2: Convert to fraction form
    685,093,777.96/945,430,349.82 = 371,827,996.76/x
  3. Step 3: Cross multiply
    685,093,777.96x = 945,430,349.82 × 371,827,996.76
  4. Step 4: Simplify right side
    685,093,777.96x = 351,537,473,049,676,608
  5. Step 5: Solve for x
    x = 351,537,473,049,676,608/685,093,777.96
  6. Step 6: Final answer
    x = 513,123,143.66

Related Problems

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Half scale
Find fourth proportional to 1,370,187,555.92, 1,890,860,699.64 and 743,655,993.52
Double scale
Find fourth proportional to 685,093,778.96, 945,430,351.20 and 371,827,997.76
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.