Home / 945,426.88-1,418,139.60-280,578.88

Finding the Fourth Proportional to 945,426.88, 1,418,139.60 and 280,578.88

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Solution

The fourth proportional to 945,426.88, 1,418,139.60 and 280,578.88 is: 420,868.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    945,426.88 : 1,418,139.60 = 280,578.88 : x
  2. Step 2: Convert to fraction form
    945,426.88/1,418,139.60 = 280,578.88/x
  3. Step 3: Cross multiply
    945,426.88x = 1,418,139.60 × 280,578.88
  4. Step 4: Simplify right side
    945,426.88x = 397,900,020,651.65
  5. Step 5: Solve for x
    x = 397,900,020,651.65/945,426.88
  6. Step 6: Final answer
    x = 420,868.11

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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.