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Finding the Fourth Proportional to 639,463.95, 959,714.33 and 618,727.95

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Solution

The fourth proportional to 639,463.95, 959,714.33 and 618,727.95 is: 928,593.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,463.95 : 959,714.33 = 618,727.95 : x
  2. Step 2: Convert to fraction form
    639,463.95/959,714.33 = 618,727.95/x
  3. Step 3: Cross multiply
    639,463.95x = 959,714.33 × 618,727.95
  4. Step 4: Simplify right side
    639,463.95x = 593,802,076,892.88
  5. Step 5: Solve for x
    x = 593,802,076,892.88/639,463.95
  6. Step 6: Final answer
    x = 928,593.51

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.