Home / 664,078,809.80-996,401,649.90-318,854,736.20

Finding the Fourth Proportional to 664,078,809.80, 996,401,649.90 and 318,854,736.20

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Solution

The fourth proportional to 664,078,809.80, 996,401,649.90 and 318,854,736.20 is: 478,418,194.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,078,809.80 : 996,401,649.90 = 318,854,736.20 : x
  2. Step 2: Convert to fraction form
    664,078,809.80/996,401,649.90 = 318,854,736.20/x
  3. Step 3: Cross multiply
    664,078,809.80x = 996,401,649.90 × 318,854,736.20
  4. Step 4: Simplify right side
    664,078,809.80x = 317,707,385,228,109,248
  5. Step 5: Solve for x
    x = 317,707,385,228,109,248/664,078,809.80
  6. Step 6: Final answer
    x = 478,418,194.56

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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.