Home / 857,744.40-1,286,616.60-644,854.80

Finding the Fourth Proportional to 857,744.40, 1,286,616.60 and 644,854.80

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Solution

The fourth proportional to 857,744.40, 1,286,616.60 and 644,854.80 is: 967,282.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    857,744.40 : 1,286,616.60 = 644,854.80 : x
  2. Step 2: Convert to fraction form
    857,744.40/1,286,616.60 = 644,854.80/x
  3. Step 3: Cross multiply
    857,744.40x = 1,286,616.60 × 644,854.80
  4. Step 4: Simplify right side
    857,744.40x = 829,680,890,269.68
  5. Step 5: Solve for x
    x = 829,680,890,269.68/857,744.40
  6. Step 6: Final answer
    x = 967,282.20

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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.