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Finding the Fourth Proportional to 636,255.18, 878,048.91 and 349,782.48

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Solution

The fourth proportional to 636,255.18, 878,048.91 and 349,782.48 is: 482,709.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,255.18 : 878,048.91 = 349,782.48 : x
  2. Step 2: Convert to fraction form
    636,255.18/878,048.91 = 349,782.48/x
  3. Step 3: Cross multiply
    636,255.18x = 878,048.91 × 349,782.48
  4. Step 4: Simplify right side
    636,255.18x = 307,126,125,301.10
  5. Step 5: Solve for x
    x = 307,126,125,301.10/636,255.18
  6. Step 6: Final answer
    x = 482,709.04

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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.