Home / 678,687.60-1,018,031.40-501,540.60

Finding the Fourth Proportional to 678,687.60, 1,018,031.40 and 501,540.60

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Solution

The fourth proportional to 678,687.60, 1,018,031.40 and 501,540.60 is: 752,310.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,687.60 : 1,018,031.40 = 501,540.60 : x
  2. Step 2: Convert to fraction form
    678,687.60/1,018,031.40 = 501,540.60/x
  3. Step 3: Cross multiply
    678,687.60x = 1,018,031.40 × 501,540.60
  4. Step 4: Simplify right side
    678,687.60x = 510,584,079,174.84
  5. Step 5: Solve for x
    x = 510,584,079,174.84/678,687.60
  6. Step 6: Final answer
    x = 752,310.90

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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.