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Finding the Fourth Proportional to 626,876.60, 940,466.10 and 206,130.20

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Solution

The fourth proportional to 626,876.60, 940,466.10 and 206,130.20 is: 309,245.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,876.60 : 940,466.10 = 206,130.20 : x
  2. Step 2: Convert to fraction form
    626,876.60/940,466.10 = 206,130.20/x
  3. Step 3: Cross multiply
    626,876.60x = 940,466.10 × 206,130.20
  4. Step 4: Simplify right side
    626,876.60x = 193,858,465,286.22
  5. Step 5: Solve for x
    x = 193,858,465,286.22/626,876.60
  6. Step 6: Final answer
    x = 309,245.02

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Double scale
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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.