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Finding the Fourth Proportional to 605,120.40, 907,680.60 and 418,496.40

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Solution

The fourth proportional to 605,120.40, 907,680.60 and 418,496.40 is: 627,744.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,120.40 : 907,680.60 = 418,496.40 : x
  2. Step 2: Convert to fraction form
    605,120.40/907,680.60 = 418,496.40/x
  3. Step 3: Cross multiply
    605,120.40x = 907,680.60 × 418,496.40
  4. Step 4: Simplify right side
    605,120.40x = 379,861,063,449.84
  5. Step 5: Solve for x
    x = 379,861,063,449.84/605,120.40
  6. Step 6: Final answer
    x = 627,744.60

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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.