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Finding the Fourth Proportional to 439,329.60, 659,118.42 and 123,789.24

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Solution

The fourth proportional to 439,329.60, 659,118.42 and 123,789.24 is: 185,718.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,329.60 : 659,118.42 = 123,789.24 : x
  2. Step 2: Convert to fraction form
    439,329.60/659,118.42 = 123,789.24/x
  3. Step 3: Cross multiply
    439,329.60x = 659,118.42 × 123,789.24
  4. Step 4: Simplify right side
    439,329.60x = 81,591,768,281.80
  5. Step 5: Solve for x
    x = 81,591,768,281.80/439,329.60
  6. Step 6: Final answer
    x = 185,718.80

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1.5x scale

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.