Home / 916,839.20-1,375,258.80-664,896.80

Finding the Fourth Proportional to 916,839.20, 1,375,258.80 and 664,896.80

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Solution

The fourth proportional to 916,839.20, 1,375,258.80 and 664,896.80 is: 997,345.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    916,839.20 : 1,375,258.80 = 664,896.80 : x
  2. Step 2: Convert to fraction form
    916,839.20/1,375,258.80 = 664,896.80/x
  3. Step 3: Cross multiply
    916,839.20x = 1,375,258.80 × 664,896.80
  4. Step 4: Simplify right side
    916,839.20x = 914,405,175,291.84
  5. Step 5: Solve for x
    x = 914,405,175,291.84/916,839.20
  6. Step 6: Final answer
    x = 997,345.20

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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.