Home / 812,690.01-1,219,115.21-280,140.93

Finding the Fourth Proportional to 812,690.01, 1,219,115.21 and 280,140.93

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Solution

The fourth proportional to 812,690.01, 1,219,115.21 and 280,140.93 is: 420,239.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,690.01 : 1,219,115.21 = 280,140.93 : x
  2. Step 2: Convert to fraction form
    812,690.01/1,219,115.21 = 280,140.93/x
  3. Step 3: Cross multiply
    812,690.01x = 1,219,115.21 × 280,140.93
  4. Step 4: Simplify right side
    812,690.01x = 341,524,067,305.84
  5. Step 5: Solve for x
    x = 341,524,067,305.84/812,690.01
  6. Step 6: Final answer
    x = 420,239.04

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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.