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Finding the Fourth Proportional to 519,781.86, 717,304.95 and 304,925.58

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Solution

The fourth proportional to 519,781.86, 717,304.95 and 304,925.58 is: 420,800.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,781.86 : 717,304.95 = 304,925.58 : x
  2. Step 2: Convert to fraction form
    519,781.86/717,304.95 = 304,925.58/x
  3. Step 3: Cross multiply
    519,781.86x = 717,304.95 × 304,925.58
  4. Step 4: Simplify right side
    519,781.86x = 218,724,627,915.62
  5. Step 5: Solve for x
    x = 218,724,627,915.62/519,781.86
  6. Step 6: Final answer
    x = 420,800.81

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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.