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Finding the Fourth Proportional to 714,314.52, 985,753.23 and 392,025.42

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Solution

The fourth proportional to 714,314.52, 985,753.23 and 392,025.42 is: 540,994.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    714,314.52 : 985,753.23 = 392,025.42 : x
  2. Step 2: Convert to fraction form
    714,314.52/985,753.23 = 392,025.42/x
  3. Step 3: Cross multiply
    714,314.52x = 985,753.23 × 392,025.42
  4. Step 4: Simplify right side
    714,314.52x = 386,440,324,007.11
  5. Step 5: Solve for x
    x = 386,440,324,007.11/714,314.52
  6. Step 6: Final answer
    x = 540,994.64

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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.