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Finding the Fourth Proportional to 636,860.10, 878,866.90 and 350,374.04

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Solution

The fourth proportional to 636,860.10, 878,866.90 and 350,374.04 is: 483,516.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,860.10 : 878,866.90 = 350,374.04 : x
  2. Step 2: Convert to fraction form
    636,860.10/878,866.90 = 350,374.04/x
  3. Step 3: Cross multiply
    636,860.10x = 878,866.90 × 350,374.04
  4. Step 4: Simplify right side
    636,860.10x = 307,932,146,375.28
  5. Step 5: Solve for x
    x = 307,932,146,375.28/636,860.10
  6. Step 6: Final answer
    x = 483,516.15

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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.