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Finding the Fourth Proportional to 518,473.28, 715,585.92 and 303,600.80

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Solution

The fourth proportional to 518,473.28, 715,585.92 and 303,600.80 is: 419,023.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,473.28 : 715,585.92 = 303,600.80 : x
  2. Step 2: Convert to fraction form
    518,473.28/715,585.92 = 303,600.80/x
  3. Step 3: Cross multiply
    518,473.28x = 715,585.92 × 303,600.80
  4. Step 4: Simplify right side
    518,473.28x = 217,252,457,780.74
  5. Step 5: Solve for x
    x = 217,252,457,780.74/518,473.28
  6. Step 6: Final answer
    x = 419,023.44

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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.