Home / 1,148,721.91-1,585,726.32-817,791.13

Finding the Fourth Proportional to 1,148,721.91, 1,585,726.32 and 817,791.13

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Solution

The fourth proportional to 1,148,721.91, 1,585,726.32 and 817,791.13 is: 1,128,900.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,148,721.91 : 1,585,726.32 = 817,791.13 : x
  2. Step 2: Convert to fraction form
    1,148,721.91/1,585,726.32 = 817,791.13/x
  3. Step 3: Cross multiply
    1,148,721.91x = 1,585,726.32 × 817,791.13
  4. Step 4: Simplify right side
    1,148,721.91x = 1,296,792,919,103.54
  5. Step 5: Solve for x
    x = 1,296,792,919,103.54/1,148,721.91
  6. Step 6: Final answer
    x = 1,128,900.66

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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.