Home / 747,469.80-1,121,204.70-214,959.60

Finding the Fourth Proportional to 747,469.80, 1,121,204.70 and 214,959.60

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Solution

The fourth proportional to 747,469.80, 1,121,204.70 and 214,959.60 is: 322,439.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    747,469.80 : 1,121,204.70 = 214,959.60 : x
  2. Step 2: Convert to fraction form
    747,469.80/1,121,204.70 = 214,959.60/x
  3. Step 3: Cross multiply
    747,469.80x = 1,121,204.70 × 214,959.60
  4. Step 4: Simplify right side
    747,469.80x = 241,013,713,830.12
  5. Step 5: Solve for x
    x = 241,013,713,830.12/747,469.80
  6. Step 6: Final answer
    x = 322,439.40

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Double scale
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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.