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Finding the Fourth Proportional to 487,652.40, 731,478.60 and 338,061.60

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Solution

The fourth proportional to 487,652.40, 731,478.60 and 338,061.60 is: 507,092.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,652.40 : 731,478.60 = 338,061.60 : x
  2. Step 2: Convert to fraction form
    487,652.40/731,478.60 = 338,061.60/x
  3. Step 3: Cross multiply
    487,652.40x = 731,478.60 × 338,061.60
  4. Step 4: Simplify right side
    487,652.40x = 247,284,825,881.76
  5. Step 5: Solve for x
    x = 247,284,825,881.76/487,652.40
  6. Step 6: Final answer
    x = 507,092.40

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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.