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Finding the Fourth Proportional to 660,233.20, 992,463.90 and 613,431.40

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Solution

The fourth proportional to 660,233.20, 992,463.90 and 613,431.40 is: 922,111.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,233.20 : 992,463.90 = 613,431.40 : x
  2. Step 2: Convert to fraction form
    660,233.20/992,463.90 = 613,431.40/x
  3. Step 3: Cross multiply
    660,233.20x = 992,463.90 × 613,431.40
  4. Step 4: Simplify right side
    660,233.20x = 608,808,519,626.46
  5. Step 5: Solve for x
    x = 608,808,519,626.46/660,233.20
  6. Step 6: Final answer
    x = 922,111.34

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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.