Home / 811,726.80-1,120,184.30-449,165.96

Finding the Fourth Proportional to 811,726.80, 1,120,184.30 and 449,165.96

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Solution

The fourth proportional to 811,726.80, 1,120,184.30 and 449,165.96 is: 619,849.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,726.80 : 1,120,184.30 = 449,165.96 : x
  2. Step 2: Convert to fraction form
    811,726.80/1,120,184.30 = 449,165.96/x
  3. Step 3: Cross multiply
    811,726.80x = 1,120,184.30 × 449,165.96
  4. Step 4: Simplify right side
    811,726.80x = 503,148,656,486.43
  5. Step 5: Solve for x
    x = 503,148,656,486.43/811,726.80
  6. Step 6: Final answer
    x = 619,849.75

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.