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Finding the Fourth Proportional to 615,102.90, 922,654.35 and 517,125.30

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Solution

The fourth proportional to 615,102.90, 922,654.35 and 517,125.30 is: 775,687.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,102.90 : 922,654.35 = 517,125.30 : x
  2. Step 2: Convert to fraction form
    615,102.90/922,654.35 = 517,125.30/x
  3. Step 3: Cross multiply
    615,102.90x = 922,654.35 × 517,125.30
  4. Step 4: Simplify right side
    615,102.90x = 477,127,907,540.06
  5. Step 5: Solve for x
    x = 477,127,907,540.06/615,102.90
  6. Step 6: Final answer
    x = 775,687.95

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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.