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Finding the Fourth Proportional to 488,711.40, 733,067.10 and 445,408.80

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Solution

The fourth proportional to 488,711.40, 733,067.10 and 445,408.80 is: 668,113.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,711.40 : 733,067.10 = 445,408.80 : x
  2. Step 2: Convert to fraction form
    488,711.40/733,067.10 = 445,408.80/x
  3. Step 3: Cross multiply
    488,711.40x = 733,067.10 × 445,408.80
  4. Step 4: Simplify right side
    488,711.40x = 326,514,537,330.48
  5. Step 5: Solve for x
    x = 326,514,537,330.48/488,711.40
  6. Step 6: Final answer
    x = 668,113.20

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Similar ratio
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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.