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Finding the Fourth Proportional to 465,620.80, 698,431.20 and 323,903.20

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Solution

The fourth proportional to 465,620.80, 698,431.20 and 323,903.20 is: 485,854.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    465,620.80 : 698,431.20 = 323,903.20 : x
  2. Step 2: Convert to fraction form
    465,620.80/698,431.20 = 323,903.20/x
  3. Step 3: Cross multiply
    465,620.80x = 698,431.20 × 323,903.20
  4. Step 4: Simplify right side
    465,620.80x = 226,224,100,659.84
  5. Step 5: Solve for x
    x = 226,224,100,659.84/465,620.80
  6. Step 6: Final answer
    x = 485,854.80

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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.