Home / 820,397.55-1,228,448.21-659,619.03

Finding the Fourth Proportional to 820,397.55, 1,228,448.21 and 659,619.03

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Solution

The fourth proportional to 820,397.55, 1,228,448.21 and 659,619.03 is: 987,701.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,397.55 : 1,228,448.21 = 659,619.03 : x
  2. Step 2: Convert to fraction form
    820,397.55/1,228,448.21 = 659,619.03/x
  3. Step 3: Cross multiply
    820,397.55x = 1,228,448.21 × 659,619.03
  4. Step 4: Simplify right side
    820,397.55x = 810,307,813,387.34
  5. Step 5: Solve for x
    x = 810,307,813,387.34/820,397.55
  6. Step 6: Final answer
    x = 987,701.41

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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.