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Finding the Fourth Proportional to 636,343.02, 878,101.43 and 374,657.02

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Solution

The fourth proportional to 636,343.02, 878,101.43 and 374,657.02 is: 516,996.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,343.02 : 878,101.43 = 374,657.02 : x
  2. Step 2: Convert to fraction form
    636,343.02/878,101.43 = 374,657.02/x
  3. Step 3: Cross multiply
    636,343.02x = 878,101.43 × 374,657.02
  4. Step 4: Simplify right side
    636,343.02x = 328,986,865,398.41
  5. Step 5: Solve for x
    x = 328,986,865,398.41/636,343.02
  6. Step 6: Final answer
    x = 516,996.11

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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.