Home / 643,954.20-966,104.10-574,315.80

Finding the Fourth Proportional to 643,954.20, 966,104.10 and 574,315.80

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Solution

The fourth proportional to 643,954.20, 966,104.10 and 574,315.80 is: 861,627.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,954.20 : 966,104.10 = 574,315.80 : x
  2. Step 2: Convert to fraction form
    643,954.20/966,104.10 = 574,315.80/x
  3. Step 3: Cross multiply
    643,954.20x = 966,104.10 × 574,315.80
  4. Step 4: Simplify right side
    643,954.20x = 554,848,849,074.78
  5. Step 5: Solve for x
    x = 554,848,849,074.78/643,954.20
  6. Step 6: Final answer
    x = 861,627.81

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.