Home / 1,121,716.38-1,547,960.52-612,418.76

Finding the Fourth Proportional to 1,121,716.38, 1,547,960.52 and 612,418.76

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Solution

The fourth proportional to 1,121,716.38, 1,547,960.52 and 612,418.76 is: 845,133.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,121,716.38 : 1,547,960.52 = 612,418.76 : x
  2. Step 2: Convert to fraction form
    1,121,716.38/1,547,960.52 = 612,418.76/x
  3. Step 3: Cross multiply
    1,121,716.38x = 1,547,960.52 × 612,418.76
  4. Step 4: Simplify right side
    1,121,716.38x = 948,000,062,548.98
  5. Step 5: Solve for x
    x = 948,000,062,548.98/1,121,716.38
  6. Step 6: Final answer
    x = 845,133.47

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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.