Home / 1,086,642.80-1,629,891.30-287,907.20

Finding the Fourth Proportional to 1,086,642.80, 1,629,891.30 and 287,907.20

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Solution

The fourth proportional to 1,086,642.80, 1,629,891.30 and 287,907.20 is: 431,841.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,086,642.80 : 1,629,891.30 = 287,907.20 : x
  2. Step 2: Convert to fraction form
    1,086,642.80/1,629,891.30 = 287,907.20/x
  3. Step 3: Cross multiply
    1,086,642.80x = 1,629,891.30 × 287,907.20
  4. Step 4: Simplify right side
    1,086,642.80x = 469,257,440,487.36
  5. Step 5: Solve for x
    x = 469,257,440,487.36/1,086,642.80
  6. Step 6: Final answer
    x = 431,841.49

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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.