Home / 487,538,683.96-731,350,541.34-137,788,428.04

Finding the Fourth Proportional to 487,538,683.96, 731,350,541.34 and 137,788,428.04

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Solution

The fourth proportional to 487,538,683.96, 731,350,541.34 and 137,788,428.04 is: 206,694,657.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,538,683.96 : 731,350,541.34 = 137,788,428.04 : x
  2. Step 2: Convert to fraction form
    487,538,683.96/731,350,541.34 = 137,788,428.04/x
  3. Step 3: Cross multiply
    487,538,683.96x = 731,350,541.34 × 137,788,428.04
  4. Step 4: Simplify right side
    487,538,683.96x = 100,771,641,437,441,632
  5. Step 5: Solve for x
    x = 100,771,641,437,441,632/487,538,683.96
  6. Step 6: Final answer
    x = 206,694,657.78

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.