Home / 693,438.80-1,040,158.20-408,837.20

Finding the Fourth Proportional to 693,438.80, 1,040,158.20 and 408,837.20

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Solution

The fourth proportional to 693,438.80, 1,040,158.20 and 408,837.20 is: 613,255.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,438.80 : 1,040,158.20 = 408,837.20 : x
  2. Step 2: Convert to fraction form
    693,438.80/1,040,158.20 = 408,837.20/x
  3. Step 3: Cross multiply
    693,438.80x = 1,040,158.20 × 408,837.20
  4. Step 4: Simplify right side
    693,438.80x = 425,255,366,045.04
  5. Step 5: Solve for x
    x = 425,255,366,045.04/693,438.80
  6. Step 6: Final answer
    x = 613,255.80

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Similar ratio
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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.