Home / 1,240,791.78-1,712,290.68-696,943.20

Finding the Fourth Proportional to 1,240,791.78, 1,712,290.68 and 696,943.20

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Solution

The fourth proportional to 1,240,791.78, 1,712,290.68 and 696,943.20 is: 961,780.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,240,791.78 : 1,712,290.68 = 696,943.20 : x
  2. Step 2: Convert to fraction form
    1,240,791.78/1,712,290.68 = 696,943.20/x
  3. Step 3: Cross multiply
    1,240,791.78x = 1,712,290.68 × 696,943.20
  4. Step 4: Simplify right side
    1,240,791.78x = 1,193,369,345,849.38
  5. Step 5: Solve for x
    x = 1,193,369,345,849.38/1,240,791.78
  6. Step 6: Final answer
    x = 961,780.51

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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.