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Finding the Fourth Proportional to 518,451.52, 715,426.68 and 285,868.12

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Solution

The fourth proportional to 518,451.52, 715,426.68 and 285,868.12 is: 394,477.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,451.52 : 715,426.68 = 285,868.12 : x
  2. Step 2: Convert to fraction form
    518,451.52/715,426.68 = 285,868.12/x
  3. Step 3: Cross multiply
    518,451.52x = 715,426.68 × 285,868.12
  4. Step 4: Simplify right side
    518,451.52x = 204,517,680,009.44
  5. Step 5: Solve for x
    x = 204,517,680,009.44/518,451.52
  6. Step 6: Final answer
    x = 394,477.93

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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.