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Finding the Fourth Proportional to 518,517.45, 715,884.35 and 423,250.65

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Solution

The fourth proportional to 518,517.45, 715,884.35 and 423,250.65 is: 584,355.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,517.45 : 715,884.35 = 423,250.65 : x
  2. Step 2: Convert to fraction form
    518,517.45/715,884.35 = 423,250.65/x
  3. Step 3: Cross multiply
    518,517.45x = 715,884.35 × 423,250.65
  4. Step 4: Simplify right side
    518,517.45x = 302,998,514,346.07
  5. Step 5: Solve for x
    x = 302,998,514,346.07/518,517.45
  6. Step 6: Final answer
    x = 584,355.48

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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.