Home / 920,371.20-1,380,753.92-521,200.64

Finding the Fourth Proportional to 920,371.20, 1,380,753.92 and 521,200.64

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Solution

The fourth proportional to 920,371.20, 1,380,753.92 and 521,200.64 is: 781,912.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,371.20 : 1,380,753.92 = 521,200.64 : x
  2. Step 2: Convert to fraction form
    920,371.20/1,380,753.92 = 521,200.64/x
  3. Step 3: Cross multiply
    920,371.20x = 1,380,753.92 × 521,200.64
  4. Step 4: Simplify right side
    920,371.20x = 719,649,826,786.51
  5. Step 5: Solve for x
    x = 719,649,826,786.51/920,371.20
  6. Step 6: Final answer
    x = 781,912.59

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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.