Home / 820,131.75-1,131,782.51-457,555.68

Finding the Fourth Proportional to 820,131.75, 1,131,782.51 and 457,555.68

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Solution

The fourth proportional to 820,131.75, 1,131,782.51 and 457,555.68 is: 631,427.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,131.75 : 1,131,782.51 = 457,555.68 : x
  2. Step 2: Convert to fraction form
    820,131.75/1,131,782.51 = 457,555.68/x
  3. Step 3: Cross multiply
    820,131.75x = 1,131,782.51 × 457,555.68
  4. Step 4: Simplify right side
    820,131.75x = 517,853,517,119.05
  5. Step 5: Solve for x
    x = 517,853,517,119.05/820,131.75
  6. Step 6: Final answer
    x = 631,427.23

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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.