Home / 1,298,743.20-1,791,105.12-815,353.38

Finding the Fourth Proportional to 1,298,743.20, 1,791,105.12 and 815,353.38

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Solution

The fourth proportional to 1,298,743.20, 1,791,105.12 and 815,353.38 is: 1,124,459.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,298,743.20 : 1,791,105.12 = 815,353.38 : x
  2. Step 2: Convert to fraction form
    1,298,743.20/1,791,105.12 = 815,353.38/x
  3. Step 3: Cross multiply
    1,298,743.20x = 1,791,105.12 × 815,353.38
  4. Step 4: Simplify right side
    1,298,743.20x = 1,460,383,613,527.31
  5. Step 5: Solve for x
    x = 1,460,383,613,527.31/1,298,743.20
  6. Step 6: Final answer
    x = 1,124,459.10

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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.