Home / 1,272,077.64-1,755,487.62-728,211.24

Finding the Fourth Proportional to 1,272,077.64, 1,755,487.62 and 728,211.24

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Solution

The fourth proportional to 1,272,077.64, 1,755,487.62 and 728,211.24 is: 1,004,943.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,272,077.64 : 1,755,487.62 = 728,211.24 : x
  2. Step 2: Convert to fraction form
    1,272,077.64/1,755,487.62 = 728,211.24/x
  3. Step 3: Cross multiply
    1,272,077.64x = 1,755,487.62 × 728,211.24
  4. Step 4: Simplify right side
    1,272,077.64x = 1,278,365,816,564.85
  5. Step 5: Solve for x
    x = 1,278,365,816,564.85/1,272,077.64
  6. Step 6: Final answer
    x = 1,004,943.23

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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.