Home / 871,298.40-1,306,947.60-658,408.80

Finding the Fourth Proportional to 871,298.40, 1,306,947.60 and 658,408.80

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Solution

The fourth proportional to 871,298.40, 1,306,947.60 and 658,408.80 is: 987,613.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    871,298.40 : 1,306,947.60 = 658,408.80 : x
  2. Step 2: Convert to fraction form
    871,298.40/1,306,947.60 = 658,408.80/x
  3. Step 3: Cross multiply
    871,298.40x = 1,306,947.60 × 658,408.80
  4. Step 4: Simplify right side
    871,298.40x = 860,505,800,978.88
  5. Step 5: Solve for x
    x = 860,505,800,978.88/871,298.40
  6. Step 6: Final answer
    x = 987,613.20

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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.