Home / 874,178.89-1,311,445.69-275,000.69

Finding the Fourth Proportional to 874,178.89, 1,311,445.69 and 275,000.69

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Solution

The fourth proportional to 874,178.89, 1,311,445.69 and 275,000.69 is: 412,556.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    874,178.89 : 1,311,445.69 = 275,000.69 : x
  2. Step 2: Convert to fraction form
    874,178.89/1,311,445.69 = 275,000.69/x
  3. Step 3: Cross multiply
    874,178.89x = 1,311,445.69 × 275,000.69
  4. Step 4: Simplify right side
    874,178.89x = 360,648,472,238.64
  5. Step 5: Solve for x
    x = 360,648,472,238.64/874,178.89
  6. Step 6: Final answer
    x = 412,556.83

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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.