Home / 725,372.80-1,088,059.20-430,460.80

Finding the Fourth Proportional to 725,372.80, 1,088,059.20 and 430,460.80

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Solution

The fourth proportional to 725,372.80, 1,088,059.20 and 430,460.80 is: 645,691.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    725,372.80 : 1,088,059.20 = 430,460.80 : x
  2. Step 2: Convert to fraction form
    725,372.80/1,088,059.20 = 430,460.80/x
  3. Step 3: Cross multiply
    725,372.80x = 1,088,059.20 × 430,460.80
  4. Step 4: Simplify right side
    725,372.80x = 468,366,833,679.36
  5. Step 5: Solve for x
    x = 468,366,833,679.36/725,372.80
  6. Step 6: Final answer
    x = 645,691.20

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Double scale
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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.