Home / 578,721.40-868,082.10-199,641.40

Finding the Fourth Proportional to 578,721.40, 868,082.10 and 199,641.40

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Solution

The fourth proportional to 578,721.40, 868,082.10 and 199,641.40 is: 299,462.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,721.40 : 868,082.10 = 199,641.40 : x
  2. Step 2: Convert to fraction form
    578,721.40/868,082.10 = 199,641.40/x
  3. Step 3: Cross multiply
    578,721.40x = 868,082.10 × 199,641.40
  4. Step 4: Simplify right side
    578,721.40x = 173,305,125,758.94
  5. Step 5: Solve for x
    x = 173,305,125,758.94/578,721.40
  6. Step 6: Final answer
    x = 299,462.10

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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.