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Finding the Fourth Proportional to 604,819.40, 907,229.10 and 418,195.40

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Solution

The fourth proportional to 604,819.40, 907,229.10 and 418,195.40 is: 627,293.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    604,819.40 : 907,229.10 = 418,195.40 : x
  2. Step 2: Convert to fraction form
    604,819.40/907,229.10 = 418,195.40/x
  3. Step 3: Cross multiply
    604,819.40x = 907,229.10 × 418,195.40
  4. Step 4: Simplify right side
    604,819.40x = 379,399,036,366.14
  5. Step 5: Solve for x
    x = 379,399,036,366.14/604,819.40
  6. Step 6: Final answer
    x = 627,293.10

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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.