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Finding the Fourth Proportional to 660,251.20, 992,490.90 and 613,449.40

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Solution

The fourth proportional to 660,251.20, 992,490.90 and 613,449.40 is: 922,138.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,251.20 : 992,490.90 = 613,449.40 : x
  2. Step 2: Convert to fraction form
    660,251.20/992,490.90 = 613,449.40/x
  3. Step 3: Cross multiply
    660,251.20x = 992,490.90 × 613,449.40
  4. Step 4: Simplify right side
    660,251.20x = 608,842,947,110.46
  5. Step 5: Solve for x
    x = 608,842,947,110.46/660,251.20
  6. Step 6: Final answer
    x = 922,138.34

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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.