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Finding the Fourth Proportional to 636,263.43, 878,044.10 and 349,788.39

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Solution

The fourth proportional to 636,263.43, 878,044.10 and 349,788.39 is: 482,708.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,263.43 : 878,044.10 = 349,788.39 : x
  2. Step 2: Convert to fraction form
    636,263.43/878,044.10 = 349,788.39/x
  3. Step 3: Cross multiply
    636,263.43x = 878,044.10 × 349,788.39
  4. Step 4: Simplify right side
    636,263.43x = 307,129,630,339.06
  5. Step 5: Solve for x
    x = 307,129,630,339.06/636,263.43
  6. Step 6: Final answer
    x = 482,708.29

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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.