Home / 798,416.40-1,198,499.40-499,234.80

Finding the Fourth Proportional to 798,416.40, 1,198,499.40 and 499,234.80

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Solution

The fourth proportional to 798,416.40, 1,198,499.40 and 499,234.80 is: 749,399.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    798,416.40 : 1,198,499.40 = 499,234.80 : x
  2. Step 2: Convert to fraction form
    798,416.40/1,198,499.40 = 499,234.80/x
  3. Step 3: Cross multiply
    798,416.40x = 1,198,499.40 × 499,234.80
  4. Step 4: Simplify right side
    798,416.40x = 598,332,608,259.12
  5. Step 5: Solve for x
    x = 598,332,608,259.12/798,416.40
  6. Step 6: Final answer
    x = 749,399.20

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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.