Home / 638,196.20-957,294.30-520,098.20

Finding the Fourth Proportional to 638,196.20, 957,294.30 and 520,098.20

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Solution

The fourth proportional to 638,196.20, 957,294.30 and 520,098.20 is: 780,147.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,196.20 : 957,294.30 = 520,098.20 : x
  2. Step 2: Convert to fraction form
    638,196.20/957,294.30 = 520,098.20/x
  3. Step 3: Cross multiply
    638,196.20x = 957,294.30 × 520,098.20
  4. Step 4: Simplify right side
    638,196.20x = 497,887,042,300.26
  5. Step 5: Solve for x
    x = 497,887,042,300.26/638,196.20
  6. Step 6: Final answer
    x = 780,147.30

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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.