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Finding the Fourth Proportional to 439,610.40, 658,897.20 and 328,672.80

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Solution

The fourth proportional to 439,610.40, 658,897.20 and 328,672.80 is: 492,621.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,610.40 : 658,897.20 = 328,672.80 : x
  2. Step 2: Convert to fraction form
    439,610.40/658,897.20 = 328,672.80/x
  3. Step 3: Cross multiply
    439,610.40x = 658,897.20 × 328,672.80
  4. Step 4: Simplify right side
    439,610.40x = 216,561,587,636.16
  5. Step 5: Solve for x
    x = 216,561,587,636.16/439,610.40
  6. Step 6: Final answer
    x = 492,621.62

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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.