Home / 2,131,140.78-2,941,032-1,272,199.56

Finding the Fourth Proportional to 2,131,140.78, 2,941,032 and 1,272,199.56

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Solution

The fourth proportional to 2,131,140.78, 2,941,032 and 1,272,199.56 is: 1,755,669.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,131,140.78 : 2,941,032 = 1,272,199.56 : x
  2. Step 2: Convert to fraction form
    2,131,140.78/2,941,032 = 1,272,199.56/x
  3. Step 3: Cross multiply
    2,131,140.78x = 2,941,032 × 1,272,199.56
  4. Step 4: Simplify right side
    2,131,140.78x = 3,741,579,616,345.92
  5. Step 5: Solve for x
    x = 3,741,579,616,345.92/2,131,140.78
  6. Step 6: Final answer
    x = 1,755,669.85

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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.