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Finding the Fourth Proportional to 874,393.79, 1,311,637.46 and 275,401.62

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Solution

The fourth proportional to 874,393.79, 1,311,637.46 and 275,401.62 is: 413,117.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    874,393.79 : 1,311,637.46 = 275,401.62 : x
  2. Step 2: Convert to fraction form
    874,393.79/1,311,637.46 = 275,401.62/x
  3. Step 3: Cross multiply
    874,393.79x = 1,311,637.46 × 275,401.62
  4. Step 4: Simplify right side
    874,393.79x = 361,227,079,959.68
  5. Step 5: Solve for x
    x = 361,227,079,959.68/874,393.79
  6. Step 6: Final answer
    x = 413,117.16

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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.