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Finding the Fourth Proportional to 615,983.40, 922,419.90 and 491,567.40

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Solution

The fourth proportional to 615,983.40, 922,419.90 and 491,567.40 is: 736,110.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,983.40 : 922,419.90 = 491,567.40 : x
  2. Step 2: Convert to fraction form
    615,983.40/922,419.90 = 491,567.40/x
  3. Step 3: Cross multiply
    615,983.40x = 922,419.90 × 491,567.40
  4. Step 4: Simplify right side
    615,983.40x = 453,431,551,951.26
  5. Step 5: Solve for x
    x = 453,431,551,951.26/615,983.40
  6. Step 6: Final answer
    x = 736,110.02

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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.