Home / 1,265,010.12-1,745,791.38-728,638.92

Finding the Fourth Proportional to 1,265,010.12, 1,745,791.38 and 728,638.92

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Solution

The fourth proportional to 1,265,010.12, 1,745,791.38 and 728,638.92 is: 1,005,566.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,265,010.12 : 1,745,791.38 = 728,638.92 : x
  2. Step 2: Convert to fraction form
    1,265,010.12/1,745,791.38 = 728,638.92/x
  3. Step 3: Cross multiply
    1,265,010.12x = 1,745,791.38 × 728,638.92
  4. Step 4: Simplify right side
    1,265,010.12x = 1,272,051,545,668.51
  5. Step 5: Solve for x
    x = 1,272,051,545,668.51/1,265,010.12
  6. Step 6: Final answer
    x = 1,005,566.30

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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.