Home / 728,091.51-1,092,294.92-278,812.40

Finding the Fourth Proportional to 728,091.51, 1,092,294.92 and 278,812.40

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Solution

The fourth proportional to 728,091.51, 1,092,294.92 and 278,812.40 is: 418,278.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,091.51 : 1,092,294.92 = 278,812.40 : x
  2. Step 2: Convert to fraction form
    728,091.51/1,092,294.92 = 278,812.40/x
  3. Step 3: Cross multiply
    728,091.51x = 1,092,294.92 × 278,812.40
  4. Step 4: Simplify right side
    728,091.51x = 304,545,366,232.33
  5. Step 5: Solve for x
    x = 304,545,366,232.33/728,091.51
  6. Step 6: Final answer
    x = 418,278.97

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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.