Home / 816,186.20-1,224,279.30-442,938.20

Finding the Fourth Proportional to 816,186.20, 1,224,279.30 and 442,938.20

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Solution

The fourth proportional to 816,186.20, 1,224,279.30 and 442,938.20 is: 664,407.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    816,186.20 : 1,224,279.30 = 442,938.20 : x
  2. Step 2: Convert to fraction form
    816,186.20/1,224,279.30 = 442,938.20/x
  3. Step 3: Cross multiply
    816,186.20x = 1,224,279.30 × 442,938.20
  4. Step 4: Simplify right side
    816,186.20x = 542,280,069,439.26
  5. Step 5: Solve for x
    x = 542,280,069,439.26/816,186.20
  6. Step 6: Final answer
    x = 664,407.30

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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.