Home / 638,153.20-957,229.80-322,569.10

Finding the Fourth Proportional to 638,153.20, 957,229.80 and 322,569.10

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Solution

The fourth proportional to 638,153.20, 957,229.80 and 322,569.10 is: 483,853.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,153.20 : 957,229.80 = 322,569.10 : x
  2. Step 2: Convert to fraction form
    638,153.20/957,229.80 = 322,569.10/x
  3. Step 3: Cross multiply
    638,153.20x = 957,229.80 × 322,569.10
  4. Step 4: Simplify right side
    638,153.20x = 308,772,755,079.18
  5. Step 5: Solve for x
    x = 308,772,755,079.18/638,153.20
  6. Step 6: Final answer
    x = 483,853.65

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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.