Home / 323,520,438.40-485,280,657.60-321,504,899.20

Finding the Fourth Proportional to 323,520,438.40, 485,280,657.60 and 321,504,899.20

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Solution

The fourth proportional to 323,520,438.40, 485,280,657.60 and 321,504,899.20 is: 482,257,348.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,520,438.40 : 485,280,657.60 = 321,504,899.20 : x
  2. Step 2: Convert to fraction form
    323,520,438.40/485,280,657.60 = 321,504,899.20/x
  3. Step 3: Cross multiply
    323,520,438.40x = 485,280,657.60 × 321,504,899.20
  4. Step 4: Simplify right side
    323,520,438.40x = 156,020,108,905,397,728
  5. Step 5: Solve for x
    x = 156,020,108,905,397,728/323,520,438.40
  6. Step 6: Final answer
    x = 482,257,348.80

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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.