Home / 725,051.40-1,087,577.10-459,112.20

Finding the Fourth Proportional to 725,051.40, 1,087,577.10 and 459,112.20

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Solution

The fourth proportional to 725,051.40, 1,087,577.10 and 459,112.20 is: 688,668.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    725,051.40 : 1,087,577.10 = 459,112.20 : x
  2. Step 2: Convert to fraction form
    725,051.40/1,087,577.10 = 459,112.20/x
  3. Step 3: Cross multiply
    725,051.40x = 1,087,577.10 × 459,112.20
  4. Step 4: Simplify right side
    725,051.40x = 499,319,915,050.62
  5. Step 5: Solve for x
    x = 499,319,915,050.62/725,051.40
  6. Step 6: Final answer
    x = 688,668.30

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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.