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Finding the Fourth Proportional to 580,086.60, 870,129.90 and 540,720.60

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Solution

The fourth proportional to 580,086.60, 870,129.90 and 540,720.60 is: 811,080.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    580,086.60 : 870,129.90 = 540,720.60 : x
  2. Step 2: Convert to fraction form
    580,086.60/870,129.90 = 540,720.60/x
  3. Step 3: Cross multiply
    580,086.60x = 870,129.90 × 540,720.60
  4. Step 4: Simplify right side
    580,086.60x = 470,497,161,605.94
  5. Step 5: Solve for x
    x = 470,497,161,605.94/580,086.60
  6. Step 6: Final answer
    x = 811,080.90

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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.