Home / 578,857.40-868,286.10-325,878.20

Finding the Fourth Proportional to 578,857.40, 868,286.10 and 325,878.20

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Solution

The fourth proportional to 578,857.40, 868,286.10 and 325,878.20 is: 488,817.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,857.40 : 868,286.10 = 325,878.20 : x
  2. Step 2: Convert to fraction form
    578,857.40/868,286.10 = 325,878.20/x
  3. Step 3: Cross multiply
    578,857.40x = 868,286.10 × 325,878.20
  4. Step 4: Simplify right side
    578,857.40x = 282,955,511,353.02
  5. Step 5: Solve for x
    x = 282,955,511,353.02/578,857.40
  6. Step 6: Final answer
    x = 488,817.30

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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.