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Finding the Fourth Proportional to 436,405.60, 654,932.88 and 324,346.72

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Solution

The fourth proportional to 436,405.60, 654,932.88 and 324,346.72 is: 486,761.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,405.60 : 654,932.88 = 324,346.72 : x
  2. Step 2: Convert to fraction form
    436,405.60/654,932.88 = 324,346.72/x
  3. Step 3: Cross multiply
    436,405.60x = 654,932.88 × 324,346.72
  4. Step 4: Simplify right side
    436,405.60x = 212,425,331,448.15
  5. Step 5: Solve for x
    x = 212,425,331,448.15/436,405.60
  6. Step 6: Final answer
    x = 486,761.24

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1.5x scale

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.