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Finding the Fourth Proportional to 678,079.48, 935,761.56 and 372,184.48

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Solution

The fourth proportional to 678,079.48, 935,761.56 and 372,184.48 is: 513,621.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,079.48 : 935,761.56 = 372,184.48 : x
  2. Step 2: Convert to fraction form
    678,079.48/935,761.56 = 372,184.48/x
  3. Step 3: Cross multiply
    678,079.48x = 935,761.56 × 372,184.48
  4. Step 4: Simplify right side
    678,079.48x = 348,275,929,612.59
  5. Step 5: Solve for x
    x = 348,275,929,612.59/678,079.48
  6. Step 6: Final answer
    x = 513,621.10

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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.