Home / 1,131,329.20-1,561,266.76-689,829.65

Finding the Fourth Proportional to 1,131,329.20, 1,561,266.76 and 689,829.65

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Solution

The fourth proportional to 1,131,329.20, 1,561,266.76 and 689,829.65 is: 951,984.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,131,329.20 : 1,561,266.76 = 689,829.65 : x
  2. Step 2: Convert to fraction form
    1,131,329.20/1,561,266.76 = 689,829.65/x
  3. Step 3: Cross multiply
    1,131,329.20x = 1,561,266.76 × 689,829.65
  4. Step 4: Simplify right side
    1,131,329.20x = 1,077,008,102,607.43
  5. Step 5: Solve for x
    x = 1,077,008,102,607.43/1,131,329.20
  6. Step 6: Final answer
    x = 951,984.72

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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.