Home / 1,491,209.80-2,057,892.96-812,145.76

Finding the Fourth Proportional to 1,491,209.80, 2,057,892.96 and 812,145.76

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Solution

The fourth proportional to 1,491,209.80, 2,057,892.96 and 812,145.76 is: 1,120,773.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,491,209.80 : 2,057,892.96 = 812,145.76 : x
  2. Step 2: Convert to fraction form
    1,491,209.80/2,057,892.96 = 812,145.76/x
  3. Step 3: Cross multiply
    1,491,209.80x = 2,057,892.96 × 812,145.76
  4. Step 4: Simplify right side
    1,491,209.80x = 1,671,309,041,997.85
  5. Step 5: Solve for x
    x = 1,671,309,041,997.85/1,491,209.80
  6. Step 6: Final answer
    x = 1,120,773.91

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.