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Finding the Fourth Proportional to 714,833.02, 986,476.40 and 392,549.86

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Solution

The fourth proportional to 714,833.02, 986,476.40 and 392,549.86 is: 541,722.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    714,833.02 : 986,476.40 = 392,549.86 : x
  2. Step 2: Convert to fraction form
    714,833.02/986,476.40 = 392,549.86/x
  3. Step 3: Cross multiply
    714,833.02x = 986,476.40 × 392,549.86
  4. Step 4: Simplify right side
    714,833.02x = 387,241,172,713.30
  5. Step 5: Solve for x
    x = 387,241,172,713.30/714,833.02
  6. Step 6: Final answer
    x = 541,722.56

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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.