Home / 672,139.20-1,008,208.80-580,900.80

Finding the Fourth Proportional to 672,139.20, 1,008,208.80 and 580,900.80

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Solution

The fourth proportional to 672,139.20, 1,008,208.80 and 580,900.80 is: 871,351.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,139.20 : 1,008,208.80 = 580,900.80 : x
  2. Step 2: Convert to fraction form
    672,139.20/1,008,208.80 = 580,900.80/x
  3. Step 3: Cross multiply
    672,139.20x = 1,008,208.80 × 580,900.80
  4. Step 4: Simplify right side
    672,139.20x = 585,669,298,487.04
  5. Step 5: Solve for x
    x = 585,669,298,487.04/672,139.20
  6. Step 6: Final answer
    x = 871,351.20

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Half scale
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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.