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Finding the Fourth Proportional to 662,806.20, 994,209.30 and 308,512.20

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Solution

The fourth proportional to 662,806.20, 994,209.30 and 308,512.20 is: 462,768.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,806.20 : 994,209.30 = 308,512.20 : x
  2. Step 2: Convert to fraction form
    662,806.20/994,209.30 = 308,512.20/x
  3. Step 3: Cross multiply
    662,806.20x = 994,209.30 × 308,512.20
  4. Step 4: Simplify right side
    662,806.20x = 306,725,698,403.46
  5. Step 5: Solve for x
    x = 306,725,698,403.46/662,806.20
  6. Step 6: Final answer
    x = 462,768.30

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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.