Home / 811,791.20-1,217,686.80-575,400.80

Finding the Fourth Proportional to 811,791.20, 1,217,686.80 and 575,400.80

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Solution

The fourth proportional to 811,791.20, 1,217,686.80 and 575,400.80 is: 863,101.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,791.20 : 1,217,686.80 = 575,400.80 : x
  2. Step 2: Convert to fraction form
    811,791.20/1,217,686.80 = 575,400.80/x
  3. Step 3: Cross multiply
    811,791.20x = 1,217,686.80 × 575,400.80
  4. Step 4: Simplify right side
    811,791.20x = 700,657,958,869.44
  5. Step 5: Solve for x
    x = 700,657,958,869.44/811,791.20
  6. Step 6: Final answer
    x = 863,101.20

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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.