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Finding the Fourth Proportional to 620,610.60, 930,915.90 and 305,002.20

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Solution

The fourth proportional to 620,610.60, 930,915.90 and 305,002.20 is: 457,503.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,610.60 : 930,915.90 = 305,002.20 : x
  2. Step 2: Convert to fraction form
    620,610.60/930,915.90 = 305,002.20/x
  3. Step 3: Cross multiply
    620,610.60x = 930,915.90 × 305,002.20
  4. Step 4: Simplify right side
    620,610.60x = 283,931,397,514.98
  5. Step 5: Solve for x
    x = 283,931,397,514.98/620,610.60
  6. Step 6: Final answer
    x = 457,503.30

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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.