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Finding the Fourth Proportional to 488,694,803.70, 733,042,205.55 and 439,377,078.90

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Solution

The fourth proportional to 488,694,803.70, 733,042,205.55 and 439,377,078.90 is: 659,065,618.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,694,803.70 : 733,042,205.55 = 439,377,078.90 : x
  2. Step 2: Convert to fraction form
    488,694,803.70/733,042,205.55 = 439,377,078.90/x
  3. Step 3: Cross multiply
    488,694,803.70x = 733,042,205.55 × 439,377,078.90
  4. Step 4: Simplify right side
    488,694,803.70x = 322,081,942,984,972,352
  5. Step 5: Solve for x
    x = 322,081,942,984,972,352/488,694,803.70
  6. Step 6: Final answer
    x = 659,065,618.35

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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.