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Finding the Fourth Proportional to 443,539.80, 664,325.55 and 384,490.80

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Solution

The fourth proportional to 443,539.80, 664,325.55 and 384,490.80 is: 575,883.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,539.80 : 664,325.55 = 384,490.80 : x
  2. Step 2: Convert to fraction form
    443,539.80/664,325.55 = 384,490.80/x
  3. Step 3: Cross multiply
    443,539.80x = 664,325.55 × 384,490.80
  4. Step 4: Simplify right side
    443,539.80x = 255,427,062,179.94
  5. Step 5: Solve for x
    x = 255,427,062,179.94/443,539.80
  6. Step 6: Final answer
    x = 575,883.07

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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.