Home / 1,131,320.25-1,561,164.15-621,924.21

Finding the Fourth Proportional to 1,131,320.25, 1,561,164.15 and 621,924.21

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Solution

The fourth proportional to 1,131,320.25, 1,561,164.15 and 621,924.21 is: 858,223.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,131,320.25 : 1,561,164.15 = 621,924.21 : x
  2. Step 2: Convert to fraction form
    1,131,320.25/1,561,164.15 = 621,924.21/x
  3. Step 3: Cross multiply
    1,131,320.25x = 1,561,164.15 × 621,924.21
  4. Step 4: Simplify right side
    1,131,320.25x = 970,925,780,669.07
  5. Step 5: Solve for x
    x = 970,925,780,669.07/1,131,320.25
  6. Step 6: Final answer
    x = 858,223.64

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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.