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Finding the Fourth Proportional to 580,910.40, 871,250.40 and 281,390.40

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Solution

The fourth proportional to 580,910.40, 871,250.40 and 281,390.40 is: 422,029.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    580,910.40 : 871,250.40 = 281,390.40 : x
  2. Step 2: Convert to fraction form
    580,910.40/871,250.40 = 281,390.40/x
  3. Step 3: Cross multiply
    580,910.40x = 871,250.40 × 281,390.40
  4. Step 4: Simplify right side
    580,910.40x = 245,161,498,556.16
  5. Step 5: Solve for x
    x = 245,161,498,556.16/580,910.40
  6. Step 6: Final answer
    x = 422,029.80

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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.