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Finding the Fourth Proportional to 884,461.20, 1,326,400.20 and 323,422.80

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Solution

The fourth proportional to 884,461.20, 1,326,400.20 and 323,422.80 is: 485,027.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    884,461.20 : 1,326,400.20 = 323,422.80 : x
  2. Step 2: Convert to fraction form
    884,461.20/1,326,400.20 = 323,422.80/x
  3. Step 3: Cross multiply
    884,461.20x = 1,326,400.20 × 323,422.80
  4. Step 4: Simplify right side
    884,461.20x = 428,988,066,604.56
  5. Step 5: Solve for x
    x = 428,988,066,604.56/884,461.20
  6. Step 6: Final answer
    x = 485,027.57

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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.