Home / 805,086.80-1,206,247.80-425,445.20

Finding the Fourth Proportional to 805,086.80, 1,206,247.80 and 425,445.20

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Solution

The fourth proportional to 805,086.80, 1,206,247.80 and 425,445.20 is: 637,437.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    805,086.80 : 1,206,247.80 = 425,445.20 : x
  2. Step 2: Convert to fraction form
    805,086.80/1,206,247.80 = 425,445.20/x
  3. Step 3: Cross multiply
    805,086.80x = 1,206,247.80 × 425,445.20
  4. Step 4: Simplify right side
    805,086.80x = 513,192,336,520.56
  5. Step 5: Solve for x
    x = 513,192,336,520.56/805,086.80
  6. Step 6: Final answer
    x = 637,437.28

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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.