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Finding the Fourth Proportional to 447,788.80, 670,516.80 and 426,793.60

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Solution

The fourth proportional to 447,788.80, 670,516.80 and 426,793.60 is: 639,078.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,788.80 : 670,516.80 = 426,793.60 : x
  2. Step 2: Convert to fraction form
    447,788.80/670,516.80 = 426,793.60/x
  3. Step 3: Cross multiply
    447,788.80x = 670,516.80 × 426,793.60
  4. Step 4: Simplify right side
    447,788.80x = 286,172,278,932.48
  5. Step 5: Solve for x
    x = 286,172,278,932.48/447,788.80
  6. Step 6: Final answer
    x = 639,078.69

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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.