Home / 685,093,780.96-945,430,353.96-371,827,999.76

Finding the Fourth Proportional to 685,093,780.96, 945,430,353.96 and 371,827,999.76

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Solution

The fourth proportional to 685,093,780.96, 945,430,353.96 and 371,827,999.76 is: 513,123,147.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,093,780.96 : 945,430,353.96 = 371,827,999.76 : x
  2. Step 2: Convert to fraction form
    685,093,780.96/945,430,353.96 = 371,827,999.76/x
  3. Step 3: Cross multiply
    685,093,780.96x = 945,430,353.96 × 371,827,999.76
  4. Step 4: Simplify right side
    685,093,780.96x = 351,537,477,425,335,616
  5. Step 5: Solve for x
    x = 351,537,477,425,335,616/685,093,780.96
  6. Step 6: Final answer
    x = 513,123,147.80

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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.