Home / 485,917.16-729,086.23-261,015.17

Finding the Fourth Proportional to 485,917.16, 729,086.23 and 261,015.17

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Solution

The fourth proportional to 485,917.16, 729,086.23 and 261,015.17 is: 391,635.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,917.16 : 729,086.23 = 261,015.17 : x
  2. Step 2: Convert to fraction form
    485,917.16/729,086.23 = 261,015.17/x
  3. Step 3: Cross multiply
    485,917.16x = 729,086.23 × 261,015.17
  4. Step 4: Simplify right side
    485,917.16x = 190,302,561,970.14
  5. Step 5: Solve for x
    x = 190,302,561,970.14/485,917.16
  6. Step 6: Final answer
    x = 391,635.82

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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.