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Finding the Fourth Proportional to 636,481.84, 878,351.28 and 350,003.92

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Solution

The fourth proportional to 636,481.84, 878,351.28 and 350,003.92 is: 483,008.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,481.84 : 878,351.28 = 350,003.92 : x
  2. Step 2: Convert to fraction form
    636,481.84/878,351.28 = 350,003.92/x
  3. Step 3: Cross multiply
    636,481.84x = 878,351.28 × 350,003.92
  4. Step 4: Simplify right side
    636,481.84x = 307,426,391,137.02
  5. Step 5: Solve for x
    x = 307,426,391,137.02/636,481.84
  6. Step 6: Final answer
    x = 483,008.90

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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.