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Finding the Fourth Proportional to 714,321.62, 985,760.97 and 392,037.02

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Solution

The fourth proportional to 714,321.62, 985,760.97 and 392,037.02 is: 541,009.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    714,321.62 : 985,760.97 = 392,037.02 : x
  2. Step 2: Convert to fraction form
    714,321.62/985,760.97 = 392,037.02/x
  3. Step 3: Cross multiply
    714,321.62x = 985,760.97 × 392,037.02
  4. Step 4: Simplify right side
    714,321.62x = 386,454,793,111.11
  5. Step 5: Solve for x
    x = 386,454,793,111.11/714,321.62
  6. Step 6: Final answer
    x = 541,009.51

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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.