Home / 814,278.20-1,220,834.10-340,719.80

Finding the Fourth Proportional to 814,278.20, 1,220,834.10 and 340,719.80

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Solution

The fourth proportional to 814,278.20, 1,220,834.10 and 340,719.80 is: 510,835.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    814,278.20 : 1,220,834.10 = 340,719.80 : x
  2. Step 2: Convert to fraction form
    814,278.20/1,220,834.10 = 340,719.80/x
  3. Step 3: Cross multiply
    814,278.20x = 1,220,834.10 × 340,719.80
  4. Step 4: Simplify right side
    814,278.20x = 415,962,350,385.18
  5. Step 5: Solve for x
    x = 415,962,350,385.18/814,278.20
  6. Step 6: Final answer
    x = 510,835.67

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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.