Home / 487,951.40-731,927.10-458,402.60

Finding the Fourth Proportional to 487,951.40, 731,927.10 and 458,402.60

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Solution

The fourth proportional to 487,951.40, 731,927.10 and 458,402.60 is: 687,603.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,951.40 : 731,927.10 = 458,402.60 : x
  2. Step 2: Convert to fraction form
    487,951.40/731,927.10 = 458,402.60/x
  3. Step 3: Cross multiply
    487,951.40x = 731,927.10 × 458,402.60
  4. Step 4: Simplify right side
    487,951.40x = 335,517,285,650.46
  5. Step 5: Solve for x
    x = 335,517,285,650.46/487,951.40
  6. Step 6: Final answer
    x = 687,603.90

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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.