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Finding the Fourth Proportional to 648,986.80, 973,480.20 and 274,961.20

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Solution

The fourth proportional to 648,986.80, 973,480.20 and 274,961.20 is: 412,441.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,986.80 : 973,480.20 = 274,961.20 : x
  2. Step 2: Convert to fraction form
    648,986.80/973,480.20 = 274,961.20/x
  3. Step 3: Cross multiply
    648,986.80x = 973,480.20 × 274,961.20
  4. Step 4: Simplify right side
    648,986.80x = 267,669,283,968.24
  5. Step 5: Solve for x
    x = 267,669,283,968.24/648,986.80
  6. Step 6: Final answer
    x = 412,441.80

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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.