Home / 871,279.20-1,306,983.60-310,240.80

Finding the Fourth Proportional to 871,279.20, 1,306,983.60 and 310,240.80

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Solution

The fourth proportional to 871,279.20, 1,306,983.60 and 310,240.80 is: 465,384.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    871,279.20 : 1,306,983.60 = 310,240.80 : x
  2. Step 2: Convert to fraction form
    871,279.20/1,306,983.60 = 310,240.80/x
  3. Step 3: Cross multiply
    871,279.20x = 1,306,983.60 × 310,240.80
  4. Step 4: Simplify right side
    871,279.20x = 405,479,637,650.88
  5. Step 5: Solve for x
    x = 405,479,637,650.88/871,279.20
  6. Step 6: Final answer
    x = 465,384.27

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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.