Home / 814,057.20-1,221,085.80-499,129.20

Finding the Fourth Proportional to 814,057.20, 1,221,085.80 and 499,129.20

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Solution

The fourth proportional to 814,057.20, 1,221,085.80 and 499,129.20 is: 748,693.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    814,057.20 : 1,221,085.80 = 499,129.20 : x
  2. Step 2: Convert to fraction form
    814,057.20/1,221,085.80 = 499,129.20/x
  3. Step 3: Cross multiply
    814,057.20x = 1,221,085.80 × 499,129.20
  4. Step 4: Simplify right side
    814,057.20x = 609,479,578,485.36
  5. Step 5: Solve for x
    x = 609,479,578,485.36/814,057.20
  6. Step 6: Final answer
    x = 748,693.80

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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.