Home / 1,212,986.20-1,815,980.10-740,594.20

Finding the Fourth Proportional to 1,212,986.20, 1,815,980.10 and 740,594.20

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Solution

The fourth proportional to 1,212,986.20, 1,815,980.10 and 740,594.20 is: 1,108,754.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,212,986.20 : 1,815,980.10 = 740,594.20 : x
  2. Step 2: Convert to fraction form
    1,212,986.20/1,815,980.10 = 740,594.20/x
  3. Step 3: Cross multiply
    1,212,986.20x = 1,815,980.10 × 740,594.20
  4. Step 4: Simplify right side
    1,212,986.20x = 1,344,904,329,375.42
  5. Step 5: Solve for x
    x = 1,344,904,329,375.42/1,212,986.20
  6. Step 6: Final answer
    x = 1,108,754.85

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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.