Home / 685,093,775.96-945,430,347.06-371,827,994.76

Finding the Fourth Proportional to 685,093,775.96, 945,430,347.06 and 371,827,994.76

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Solution

The fourth proportional to 685,093,775.96, 945,430,347.06 and 371,827,994.76 is: 513,123,140.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,093,775.96 : 945,430,347.06 = 371,827,994.76 : x
  2. Step 2: Convert to fraction form
    685,093,775.96/945,430,347.06 = 371,827,994.76/x
  3. Step 3: Cross multiply
    685,093,775.96x = 945,430,347.06 × 371,827,994.76
  4. Step 4: Simplify right side
    685,093,775.96x = 351,537,470,132,570,624
  5. Step 5: Solve for x
    x = 351,537,470,132,570,624/685,093,775.96
  6. Step 6: Final answer
    x = 513,123,140.90

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Double scale
Find fourth proportional to 685,093,776.96, 945,430,348.44 and 371,827,995.76
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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.