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Finding the Fourth Proportional to 636,669.68, 878,618.20 and 350,204.28

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Solution

The fourth proportional to 636,669.68, 878,618.20 and 350,204.28 is: 483,289.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,669.68 : 878,618.20 = 350,204.28 : x
  2. Step 2: Convert to fraction form
    636,669.68/878,618.20 = 350,204.28/x
  3. Step 3: Cross multiply
    636,669.68x = 878,618.20 × 350,204.28
  4. Step 4: Simplify right side
    636,669.68x = 307,695,854,125.90
  5. Step 5: Solve for x
    x = 307,695,854,125.90/636,669.68
  6. Step 6: Final answer
    x = 483,289.63

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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.