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Finding the Fourth Proportional to 636,744.28, 878,709.18 and 350,286.16

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Solution

The fourth proportional to 636,744.28, 878,709.18 and 350,286.16 is: 483,396.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,744.28 : 878,709.18 = 350,286.16 : x
  2. Step 2: Convert to fraction form
    636,744.28/878,709.18 = 350,286.16/x
  3. Step 3: Cross multiply
    636,744.28x = 878,709.18 × 350,286.16
  4. Step 4: Simplify right side
    636,744.28x = 307,799,664,418.95
  5. Step 5: Solve for x
    x = 307,799,664,418.95/636,744.28
  6. Step 6: Final answer
    x = 483,396.04

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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.