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Finding the Fourth Proportional to 484,485.80, 726,728.70 and 379,394.60

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Solution

The fourth proportional to 484,485.80, 726,728.70 and 379,394.60 is: 569,091.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,485.80 : 726,728.70 = 379,394.60 : x
  2. Step 2: Convert to fraction form
    484,485.80/726,728.70 = 379,394.60/x
  3. Step 3: Cross multiply
    484,485.80x = 726,728.70 × 379,394.60
  4. Step 4: Simplify right side
    484,485.80x = 275,716,944,445.02
  5. Step 5: Solve for x
    x = 275,716,944,445.02/484,485.80
  6. Step 6: Final answer
    x = 569,091.90

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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.