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Finding the Fourth Proportional to 518,452.52, 715,428.06 and 285,869.12

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Solution

The fourth proportional to 518,452.52, 715,428.06 and 285,869.12 is: 394,479.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,452.52 : 715,428.06 = 285,869.12 : x
  2. Step 2: Convert to fraction form
    518,452.52/715,428.06 = 285,869.12/x
  3. Step 3: Cross multiply
    518,452.52x = 715,428.06 × 285,869.12
  4. Step 4: Simplify right side
    518,452.52x = 204,518,789,935.51
  5. Step 5: Solve for x
    x = 204,518,789,935.51/518,452.52
  6. Step 6: Final answer
    x = 394,479.31

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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.