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Finding the Fourth Proportional to 488,694,804.70, 733,042,207.05 and 439,377,079.90

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Solution

The fourth proportional to 488,694,804.70, 733,042,207.05 and 439,377,079.90 is: 659,065,619.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,694,804.70 : 733,042,207.05 = 439,377,079.90 : x
  2. Step 2: Convert to fraction form
    488,694,804.70/733,042,207.05 = 439,377,079.90/x
  3. Step 3: Cross multiply
    488,694,804.70x = 733,042,207.05 × 439,377,079.90
  4. Step 4: Simplify right side
    488,694,804.70x = 322,081,944,377,080,128
  5. Step 5: Solve for x
    x = 322,081,944,377,080,128/488,694,804.70
  6. Step 6: Final answer
    x = 659,065,619.85

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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.