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Finding the Fourth Proportional to 580,937.20, 871,405.80 and 206,972.40

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Solution

The fourth proportional to 580,937.20, 871,405.80 and 206,972.40 is: 310,458.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    580,937.20 : 871,405.80 = 206,972.40 : x
  2. Step 2: Convert to fraction form
    580,937.20/871,405.80 = 206,972.40/x
  3. Step 3: Cross multiply
    580,937.20x = 871,405.80 × 206,972.40
  4. Step 4: Simplify right side
    580,937.20x = 180,356,949,799.92
  5. Step 5: Solve for x
    x = 180,356,949,799.92/580,937.20
  6. Step 6: Final answer
    x = 310,458.60

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1.5x scale

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.