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Finding the Fourth Proportional to 486,514.60, 729,115.80 and 326,134.60

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Solution

The fourth proportional to 486,514.60, 729,115.80 and 326,134.60 is: 488,762.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,514.60 : 729,115.80 = 326,134.60 : x
  2. Step 2: Convert to fraction form
    486,514.60/729,115.80 = 326,134.60/x
  3. Step 3: Cross multiply
    486,514.60x = 729,115.80 × 326,134.60
  4. Step 4: Simplify right side
    486,514.60x = 237,789,889,786.68
  5. Step 5: Solve for x
    x = 237,789,889,786.68/486,514.60
  6. Step 6: Final answer
    x = 488,762.08

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.