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Finding the Fourth Proportional to 620,627.20, 930,940.80 and 266,333.20

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Solution

The fourth proportional to 620,627.20, 930,940.80 and 266,333.20 is: 399,499.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,627.20 : 930,940.80 = 266,333.20 : x
  2. Step 2: Convert to fraction form
    620,627.20/930,940.80 = 266,333.20/x
  3. Step 3: Cross multiply
    620,627.20x = 930,940.80 × 266,333.20
  4. Step 4: Simplify right side
    620,627.20x = 247,940,442,274.56
  5. Step 5: Solve for x
    x = 247,940,442,274.56/620,627.20
  6. Step 6: Final answer
    x = 399,499.80

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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.