Home / 539,789.46-809,685.16-140,429.60

Finding the Fourth Proportional to 539,789.46, 809,685.16 and 140,429.60

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Solution

The fourth proportional to 539,789.46, 809,685.16 and 140,429.60 is: 210,644.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,789.46 : 809,685.16 = 140,429.60 : x
  2. Step 2: Convert to fraction form
    539,789.46/809,685.16 = 140,429.60/x
  3. Step 3: Cross multiply
    539,789.46x = 809,685.16 × 140,429.60
  4. Step 4: Simplify right side
    539,789.46x = 113,703,758,394.16
  5. Step 5: Solve for x
    x = 113,703,758,394.16/539,789.46
  6. Step 6: Final answer
    x = 210,644.64

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Similar ratio
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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.