Home / 621,815.40-932,723.10-222,469.20

Finding the Fourth Proportional to 621,815.40, 932,723.10 and 222,469.20

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Solution

The fourth proportional to 621,815.40, 932,723.10 and 222,469.20 is: 333,703.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,815.40 : 932,723.10 = 222,469.20 : x
  2. Step 2: Convert to fraction form
    621,815.40/932,723.10 = 222,469.20/x
  3. Step 3: Cross multiply
    621,815.40x = 932,723.10 × 222,469.20
  4. Step 4: Simplify right side
    621,815.40x = 207,502,161,878.52
  5. Step 5: Solve for x
    x = 207,502,161,878.52/621,815.40
  6. Step 6: Final answer
    x = 333,703.80

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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.