Home / 1,581,278.62-2,182,138.03-856,120.45

Finding the Fourth Proportional to 1,581,278.62, 2,182,138.03 and 856,120.45

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Solution

The fourth proportional to 1,581,278.62, 2,182,138.03 and 856,120.45 is: 1,181,431.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,581,278.62 : 2,182,138.03 = 856,120.45 : x
  2. Step 2: Convert to fraction form
    1,581,278.62/2,182,138.03 = 856,120.45/x
  3. Step 3: Cross multiply
    1,581,278.62x = 2,182,138.03 × 856,120.45
  4. Step 4: Simplify right side
    1,581,278.62x = 1,868,172,977,014.42
  5. Step 5: Solve for x
    x = 1,868,172,977,014.42/1,581,278.62
  6. Step 6: Final answer
    x = 1,181,431.89

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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.