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Finding the Fourth Proportional to 465,761.20, 699,486.60 and 407,700.40

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Solution

The fourth proportional to 465,761.20, 699,486.60 and 407,700.40 is: 612,290.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    465,761.20 : 699,486.60 = 407,700.40 : x
  2. Step 2: Convert to fraction form
    465,761.20/699,486.60 = 407,700.40/x
  3. Step 3: Cross multiply
    465,761.20x = 699,486.60 × 407,700.40
  4. Step 4: Simplify right side
    465,761.20x = 285,180,966,614.64
  5. Step 5: Solve for x
    x = 285,180,966,614.64/465,761.20
  6. Step 6: Final answer
    x = 612,290.09

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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.