Home / 1,121,717.38-1,547,961.90-612,419.76

Finding the Fourth Proportional to 1,121,717.38, 1,547,961.90 and 612,419.76

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Solution

The fourth proportional to 1,121,717.38, 1,547,961.90 and 612,419.76 is: 845,134.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,121,717.38 : 1,547,961.90 = 612,419.76 : x
  2. Step 2: Convert to fraction form
    1,121,717.38/1,547,961.90 = 612,419.76/x
  3. Step 3: Cross multiply
    1,121,717.38x = 1,547,961.90 × 612,419.76
  4. Step 4: Simplify right side
    1,121,717.38x = 948,002,455,287.14
  5. Step 5: Solve for x
    x = 948,002,455,287.14/1,121,717.38
  6. Step 6: Final answer
    x = 845,134.85

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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.