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Finding the Fourth Proportional to 580,987.20, 871,480.80 and 187,003.20

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Solution

The fourth proportional to 580,987.20, 871,480.80 and 187,003.20 is: 280,504.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    580,987.20 : 871,480.80 = 187,003.20 : x
  2. Step 2: Convert to fraction form
    580,987.20/871,480.80 = 187,003.20/x
  3. Step 3: Cross multiply
    580,987.20x = 871,480.80 × 187,003.20
  4. Step 4: Simplify right side
    580,987.20x = 162,969,698,338.56
  5. Step 5: Solve for x
    x = 162,969,698,338.56/580,987.20
  6. Step 6: Final answer
    x = 280,504.80

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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.