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Finding the Fourth Proportional to 678,087.48, 935,772.60 and 372,192.48

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Solution

The fourth proportional to 678,087.48, 935,772.60 and 372,192.48 is: 513,632.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,087.48 : 935,772.60 = 372,192.48 : x
  2. Step 2: Convert to fraction form
    678,087.48/935,772.60 = 372,192.48/x
  3. Step 3: Cross multiply
    678,087.48x = 935,772.60 × 372,192.48
  4. Step 4: Simplify right side
    678,087.48x = 348,287,524,710.05
  5. Step 5: Solve for x
    x = 348,287,524,710.05/678,087.48
  6. Step 6: Final answer
    x = 513,632.14

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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.