Home / 871,289.70-1,306,999.35-310,251.30

Finding the Fourth Proportional to 871,289.70, 1,306,999.35 and 310,251.30

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Solution

The fourth proportional to 871,289.70, 1,306,999.35 and 310,251.30 is: 465,400.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    871,289.70 : 1,306,999.35 = 310,251.30 : x
  2. Step 2: Convert to fraction form
    871,289.70/1,306,999.35 = 310,251.30/x
  3. Step 3: Cross multiply
    871,289.70x = 1,306,999.35 × 310,251.30
  4. Step 4: Simplify right side
    871,289.70x = 405,498,247,436.66
  5. Step 5: Solve for x
    x = 405,498,247,436.66/871,289.70
  6. Step 6: Final answer
    x = 465,400.02

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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.