Home / 1,272,357.38-1,755,856.82-728,501.51

Finding the Fourth Proportional to 1,272,357.38, 1,755,856.82 and 728,501.51

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Solution

The fourth proportional to 1,272,357.38, 1,755,856.82 and 728,501.51 is: 1,005,334.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,272,357.38 : 1,755,856.82 = 728,501.51 : x
  2. Step 2: Convert to fraction form
    1,272,357.38/1,755,856.82 = 728,501.51/x
  3. Step 3: Cross multiply
    1,272,357.38x = 1,755,856.82 × 728,501.51
  4. Step 4: Simplify right side
    1,272,357.38x = 1,279,144,337,755.77
  5. Step 5: Solve for x
    x = 1,279,144,337,755.77/1,272,357.38
  6. Step 6: Final answer
    x = 1,005,334.16

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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.