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Finding the Fourth Proportional to 677,842.46, 935,456.55 and 387,469.00

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Solution

The fourth proportional to 677,842.46, 935,456.55 and 387,469.00 is: 534,726.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    677,842.46 : 935,456.55 = 387,469.00 : x
  2. Step 2: Convert to fraction form
    677,842.46/935,456.55 = 387,469.00/x
  3. Step 3: Cross multiply
    677,842.46x = 935,456.55 × 387,469.00
  4. Step 4: Simplify right side
    677,842.46x = 362,460,413,688.26
  5. Step 5: Solve for x
    x = 362,460,413,688.26/677,842.46
  6. Step 6: Final answer
    x = 534,726.63

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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.