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Finding the Fourth Proportional to 620,449.20, 930,673.80 and 265,499.10

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Solution

The fourth proportional to 620,449.20, 930,673.80 and 265,499.10 is: 398,248.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,449.20 : 930,673.80 = 265,499.10 : x
  2. Step 2: Convert to fraction form
    620,449.20/930,673.80 = 265,499.10/x
  3. Step 3: Cross multiply
    620,449.20x = 930,673.80 × 265,499.10
  4. Step 4: Simplify right side
    620,449.20x = 247,093,056,293.58
  5. Step 5: Solve for x
    x = 247,093,056,293.58/620,449.20
  6. Step 6: Final answer
    x = 398,248.65

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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.