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Finding the Fourth Proportional to 518,651.60, 715,029 and 327,569.36

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Solution

The fourth proportional to 518,651.60, 715,029 and 327,569.36 is: 451,597.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,651.60 : 715,029 = 327,569.36 : x
  2. Step 2: Convert to fraction form
    518,651.60/715,029 = 327,569.36/x
  3. Step 3: Cross multiply
    518,651.60x = 715,029 × 327,569.36
  4. Step 4: Simplify right side
    518,651.60x = 234,221,591,911.44
  5. Step 5: Solve for x
    x = 234,221,591,911.44/518,651.60
  6. Step 6: Final answer
    x = 451,597.16

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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.