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Finding the Fourth Proportional to 384,775.20, 576,506.70 and 328,350.60

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Solution

The fourth proportional to 384,775.20, 576,506.70 and 328,350.60 is: 491,966.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,775.20 : 576,506.70 = 328,350.60 : x
  2. Step 2: Convert to fraction form
    384,775.20/576,506.70 = 328,350.60/x
  3. Step 3: Cross multiply
    384,775.20x = 576,506.70 × 328,350.60
  4. Step 4: Simplify right side
    384,775.20x = 189,296,320,849.02
  5. Step 5: Solve for x
    x = 189,296,320,849.02/384,775.20
  6. Step 6: Final answer
    x = 491,966.01

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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.