Home / 814,123.38-1,221,296.16-281,501.40

Finding the Fourth Proportional to 814,123.38, 1,221,296.16 and 281,501.40

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Solution

The fourth proportional to 814,123.38, 1,221,296.16 and 281,501.40 is: 422,290.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    814,123.38 : 1,221,296.16 = 281,501.40 : x
  2. Step 2: Convert to fraction form
    814,123.38/1,221,296.16 = 281,501.40/x
  3. Step 3: Cross multiply
    814,123.38x = 1,221,296.16 × 281,501.40
  4. Step 4: Simplify right side
    814,123.38x = 343,796,578,854.62
  5. Step 5: Solve for x
    x = 343,796,578,854.62/814,123.38
  6. Step 6: Final answer
    x = 422,290.51

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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.