Home / 486,387.18-671,021.42-324,986.58

Finding the Fourth Proportional to 486,387.18, 671,021.42 and 324,986.58

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Solution

The fourth proportional to 486,387.18, 671,021.42 and 324,986.58 is: 448,352.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,387.18 : 671,021.42 = 324,986.58 : x
  2. Step 2: Convert to fraction form
    486,387.18/671,021.42 = 324,986.58/x
  3. Step 3: Cross multiply
    486,387.18x = 671,021.42 × 324,986.58
  4. Step 4: Simplify right side
    486,387.18x = 218,072,954,767.61
  5. Step 5: Solve for x
    x = 218,072,954,767.61/486,387.18
  6. Step 6: Final answer
    x = 448,352.60

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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.