Home / 578,689.40-868,034.10-199,609.40

Finding the Fourth Proportional to 578,689.40, 868,034.10 and 199,609.40

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Solution

The fourth proportional to 578,689.40, 868,034.10 and 199,609.40 is: 299,414.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,689.40 : 868,034.10 = 199,609.40 : x
  2. Step 2: Convert to fraction form
    578,689.40/868,034.10 = 199,609.40/x
  3. Step 3: Cross multiply
    578,689.40x = 868,034.10 × 199,609.40
  4. Step 4: Simplify right side
    578,689.40x = 173,267,765,880.54
  5. Step 5: Solve for x
    x = 173,267,765,880.54/578,689.40
  6. Step 6: Final answer
    x = 299,414.10

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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.