Home / 1,257,115.20-1,885,672.80-458,422.80

Finding the Fourth Proportional to 1,257,115.20, 1,885,672.80 and 458,422.80

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Solution

The fourth proportional to 1,257,115.20, 1,885,672.80 and 458,422.80 is: 687,634.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,257,115.20 : 1,885,672.80 = 458,422.80 : x
  2. Step 2: Convert to fraction form
    1,257,115.20/1,885,672.80 = 458,422.80/x
  3. Step 3: Cross multiply
    1,257,115.20x = 1,885,672.80 × 458,422.80
  4. Step 4: Simplify right side
    1,257,115.20x = 864,435,404,859.84
  5. Step 5: Solve for x
    x = 864,435,404,859.84/1,257,115.20
  6. Step 6: Final answer
    x = 687,634.20

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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.