Home / 814,985.40-1,221,311.70-565,375.80

Finding the Fourth Proportional to 814,985.40, 1,221,311.70 and 565,375.80

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Solution

The fourth proportional to 814,985.40, 1,221,311.70 and 565,375.80 is: 847,254.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    814,985.40 : 1,221,311.70 = 565,375.80 : x
  2. Step 2: Convert to fraction form
    814,985.40/1,221,311.70 = 565,375.80/x
  3. Step 3: Cross multiply
    814,985.40x = 1,221,311.70 × 565,375.80
  4. Step 4: Simplify right side
    814,985.40x = 690,500,079,436.86
  5. Step 5: Solve for x
    x = 690,500,079,436.86/814,985.40
  6. Step 6: Final answer
    x = 847,254.54

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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.