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Finding the Fourth Proportional to 636,791.22, 878,762.52 and 350,294.22

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Solution

The fourth proportional to 636,791.22, 878,762.52 and 350,294.22 is: 483,400.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,791.22 : 878,762.52 = 350,294.22 : x
  2. Step 2: Convert to fraction form
    636,791.22/878,762.52 = 350,294.22/x
  3. Step 3: Cross multiply
    636,791.22x = 878,762.52 × 350,294.22
  4. Step 4: Simplify right side
    636,791.22x = 307,825,431,508.63
  5. Step 5: Solve for x
    x = 307,825,431,508.63/636,791.22
  6. Step 6: Final answer
    x = 483,400.87

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1.5x scale

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.