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Finding the Fourth Proportional to 714,832.02, 986,475.02 and 392,548.86

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Solution

The fourth proportional to 714,832.02, 986,475.02 and 392,548.86 is: 541,721.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    714,832.02 : 986,475.02 = 392,548.86 : x
  2. Step 2: Convert to fraction form
    714,832.02/986,475.02 = 392,548.86/x
  3. Step 3: Cross multiply
    714,832.02x = 986,475.02 × 392,548.86
  4. Step 4: Simplify right side
    714,832.02x = 387,239,642,556.73
  5. Step 5: Solve for x
    x = 387,239,642,556.73/714,832.02
  6. Step 6: Final answer
    x = 541,721.18

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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.