Home / 2,578,687.77-3,868,027.43-685,429.23

Finding the Fourth Proportional to 2,578,687.77, 3,868,027.43 and 685,429.23

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Solution

The fourth proportional to 2,578,687.77, 3,868,027.43 and 685,429.23 is: 1,028,142.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,578,687.77 : 3,868,027.43 = 685,429.23 : x
  2. Step 2: Convert to fraction form
    2,578,687.77/3,868,027.43 = 685,429.23/x
  3. Step 3: Cross multiply
    2,578,687.77x = 3,868,027.43 × 685,429.23
  4. Step 4: Simplify right side
    2,578,687.77x = 2,651,259,059,536.63
  5. Step 5: Solve for x
    x = 2,651,259,059,536.63/2,578,687.77
  6. Step 6: Final answer
    x = 1,028,142.72

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.