Home / 647,694,455.85-971,541,683.78-320,220,511.65

Finding the Fourth Proportional to 647,694,455.85, 971,541,683.78 and 320,220,511.65

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Solution

The fourth proportional to 647,694,455.85, 971,541,683.78 and 320,220,511.65 is: 480,330,767.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,694,455.85 : 971,541,683.78 = 320,220,511.65 : x
  2. Step 2: Convert to fraction form
    647,694,455.85/971,541,683.78 = 320,220,511.65/x
  3. Step 3: Cross multiply
    647,694,455.85x = 971,541,683.78 × 320,220,511.65
  4. Step 4: Simplify right side
    647,694,455.85x = 311,107,575,067,732,992
  5. Step 5: Solve for x
    x = 311,107,575,067,732,992/647,694,455.85
  6. Step 6: Final answer
    x = 480,330,767.48

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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.