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Finding the Fourth Proportional to 620,634.60, 930,951.90 and 305,026.20

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Solution

The fourth proportional to 620,634.60, 930,951.90 and 305,026.20 is: 457,539.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,634.60 : 930,951.90 = 305,026.20 : x
  2. Step 2: Convert to fraction form
    620,634.60/930,951.90 = 305,026.20/x
  3. Step 3: Cross multiply
    620,634.60x = 930,951.90 × 305,026.20
  4. Step 4: Simplify right side
    620,634.60x = 283,964,720,439.78
  5. Step 5: Solve for x
    x = 283,964,720,439.78/620,634.60
  6. Step 6: Final answer
    x = 457,539.30

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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.