Home / 647,694,466.10-971,541,699.15-320,220,521.90

Finding the Fourth Proportional to 647,694,466.10, 971,541,699.15 and 320,220,521.90

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Solution

The fourth proportional to 647,694,466.10, 971,541,699.15 and 320,220,521.90 is: 480,330,782.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,694,466.10 : 971,541,699.15 = 320,220,521.90 : x
  2. Step 2: Convert to fraction form
    647,694,466.10/971,541,699.15 = 320,220,521.90/x
  3. Step 3: Cross multiply
    647,694,466.10x = 971,541,699.15 × 320,220,521.90
  4. Step 4: Simplify right side
    647,694,466.10x = 311,107,589,949,425,728
  5. Step 5: Solve for x
    x = 311,107,589,949,425,728/647,694,466.10
  6. Step 6: Final answer
    x = 480,330,782.85

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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.