Home / 1,228,082.55-1,842,123.83-687,784.20

Finding the Fourth Proportional to 1,228,082.55, 1,842,123.83 and 687,784.20

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Solution

The fourth proportional to 1,228,082.55, 1,842,123.83 and 687,784.20 is: 1,031,676.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,228,082.55 : 1,842,123.83 = 687,784.20 : x
  2. Step 2: Convert to fraction form
    1,228,082.55/1,842,123.83 = 687,784.20/x
  3. Step 3: Cross multiply
    1,228,082.55x = 1,842,123.83 × 687,784.20
  4. Step 4: Simplify right side
    1,228,082.55x = 1,266,983,661,278.57
  5. Step 5: Solve for x
    x = 1,266,983,661,278.57/1,228,082.55
  6. Step 6: Final answer
    x = 1,031,676.30

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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.