Home / 1,216,487.12-1,678,722.40-672,608.56

Finding the Fourth Proportional to 1,216,487.12, 1,678,722.40 and 672,608.56

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Solution

The fourth proportional to 1,216,487.12, 1,678,722.40 and 672,608.56 is: 928,183.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,216,487.12 : 1,678,722.40 = 672,608.56 : x
  2. Step 2: Convert to fraction form
    1,216,487.12/1,678,722.40 = 672,608.56/x
  3. Step 3: Cross multiply
    1,216,487.12x = 1,678,722.40 × 672,608.56
  4. Step 4: Simplify right side
    1,216,487.12x = 1,129,123,056,103.74
  5. Step 5: Solve for x
    x = 1,129,123,056,103.74/1,216,487.12
  6. Step 6: Final answer
    x = 928,183.32

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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.