Home / 664,476.20-996,860.10-215,120.60

Finding the Fourth Proportional to 664,476.20, 996,860.10 and 215,120.60

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Solution

The fourth proportional to 664,476.20, 996,860.10 and 215,120.60 is: 322,728.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,476.20 : 996,860.10 = 215,120.60 : x
  2. Step 2: Convert to fraction form
    664,476.20/996,860.10 = 215,120.60/x
  3. Step 3: Cross multiply
    664,476.20x = 996,860.10 × 215,120.60
  4. Step 4: Simplify right side
    664,476.20x = 214,445,142,828.06
  5. Step 5: Solve for x
    x = 214,445,142,828.06/664,476.20
  6. Step 6: Final answer
    x = 322,728.10

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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.