Home / 987,972.08-1,482,079.31-278,000.79

Finding the Fourth Proportional to 987,972.08, 1,482,079.31 and 278,000.79

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Solution

The fourth proportional to 987,972.08, 1,482,079.31 and 278,000.79 is: 417,035.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    987,972.08 : 1,482,079.31 = 278,000.79 : x
  2. Step 2: Convert to fraction form
    987,972.08/1,482,079.31 = 278,000.79/x
  3. Step 3: Cross multiply
    987,972.08x = 1,482,079.31 × 278,000.79
  4. Step 4: Simplify right side
    987,972.08x = 412,019,217,632.65
  5. Step 5: Solve for x
    x = 412,019,217,632.65/987,972.08
  6. Step 6: Final answer
    x = 417,035.29

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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.