Home / 578,744.40-868,116.60-389,787.60

Finding the Fourth Proportional to 578,744.40, 868,116.60 and 389,787.60

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Solution

The fourth proportional to 578,744.40, 868,116.60 and 389,787.60 is: 584,681.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,744.40 : 868,116.60 = 389,787.60 : x
  2. Step 2: Convert to fraction form
    578,744.40/868,116.60 = 389,787.60/x
  3. Step 3: Cross multiply
    578,744.40x = 868,116.60 × 389,787.60
  4. Step 4: Simplify right side
    578,744.40x = 338,381,086,034.16
  5. Step 5: Solve for x
    x = 338,381,086,034.16/578,744.40
  6. Step 6: Final answer
    x = 584,681.40

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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.