Home / 1,224,726.65-1,690,180.45-680,871.51

Finding the Fourth Proportional to 1,224,726.65, 1,690,180.45 and 680,871.51

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Solution

The fourth proportional to 1,224,726.65, 1,690,180.45 and 680,871.51 is: 939,634.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,224,726.65 : 1,690,180.45 = 680,871.51 : x
  2. Step 2: Convert to fraction form
    1,224,726.65/1,690,180.45 = 680,871.51/x
  3. Step 3: Cross multiply
    1,224,726.65x = 1,690,180.45 × 680,871.51
  4. Step 4: Simplify right side
    1,224,726.65x = 1,150,795,717,687.25
  5. Step 5: Solve for x
    x = 1,150,795,717,687.25/1,224,726.65
  6. Step 6: Final answer
    x = 939,634.75

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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.