Home / 819,331.20-1,228,996.80-653,443.20

Finding the Fourth Proportional to 819,331.20, 1,228,996.80 and 653,443.20

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Solution

The fourth proportional to 819,331.20, 1,228,996.80 and 653,443.20 is: 980,164.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,331.20 : 1,228,996.80 = 653,443.20 : x
  2. Step 2: Convert to fraction form
    819,331.20/1,228,996.80 = 653,443.20/x
  3. Step 3: Cross multiply
    819,331.20x = 1,228,996.80 × 653,443.20
  4. Step 4: Simplify right side
    819,331.20x = 803,079,601,781.76
  5. Step 5: Solve for x
    x = 803,079,601,781.76/819,331.20
  6. Step 6: Final answer
    x = 980,164.80

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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.