Home / 820,642.50-1,132,675.62-481,220.10

Finding the Fourth Proportional to 820,642.50, 1,132,675.62 and 481,220.10

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Solution

The fourth proportional to 820,642.50, 1,132,675.62 and 481,220.10 is: 664,194.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,642.50 : 1,132,675.62 = 481,220.10 : x
  2. Step 2: Convert to fraction form
    820,642.50/1,132,675.62 = 481,220.10/x
  3. Step 3: Cross multiply
    820,642.50x = 1,132,675.62 × 481,220.10
  4. Step 4: Simplify right side
    820,642.50x = 545,066,275,123.96
  5. Step 5: Solve for x
    x = 545,066,275,123.96/820,642.50
  6. Step 6: Final answer
    x = 664,194.55

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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.