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Finding the Fourth Proportional to 439,627.60, 659,441.40 and 437,003.20

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Solution

The fourth proportional to 439,627.60, 659,441.40 and 437,003.20 is: 655,504.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,627.60 : 659,441.40 = 437,003.20 : x
  2. Step 2: Convert to fraction form
    439,627.60/659,441.40 = 437,003.20/x
  3. Step 3: Cross multiply
    439,627.60x = 659,441.40 × 437,003.20
  4. Step 4: Simplify right side
    439,627.60x = 288,178,002,012.48
  5. Step 5: Solve for x
    x = 288,178,002,012.48/439,627.60
  6. Step 6: Final answer
    x = 655,504.80

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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.