Home / 681,046.80-1,021,570.20-645,104.40

Finding the Fourth Proportional to 681,046.80, 1,021,570.20 and 645,104.40

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Solution

The fourth proportional to 681,046.80, 1,021,570.20 and 645,104.40 is: 967,656.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,046.80 : 1,021,570.20 = 645,104.40 : x
  2. Step 2: Convert to fraction form
    681,046.80/1,021,570.20 = 645,104.40/x
  3. Step 3: Cross multiply
    681,046.80x = 1,021,570.20 × 645,104.40
  4. Step 4: Simplify right side
    681,046.80x = 659,019,430,928.88
  5. Step 5: Solve for x
    x = 659,019,430,928.88/681,046.80
  6. Step 6: Final answer
    x = 967,656.60

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Similar ratio
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1.5x scale

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.