Home / 664,261,401.60-996,392,102.40-319,131,806.40

Finding the Fourth Proportional to 664,261,401.60, 996,392,102.40 and 319,131,806.40

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Solution

The fourth proportional to 664,261,401.60, 996,392,102.40 and 319,131,806.40 is: 478,697,709.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,261,401.60 : 996,392,102.40 = 319,131,806.40 : x
  2. Step 2: Convert to fraction form
    664,261,401.60/996,392,102.40 = 319,131,806.40/x
  3. Step 3: Cross multiply
    664,261,401.60x = 996,392,102.40 × 319,131,806.40
  4. Step 4: Simplify right side
    664,261,401.60x = 317,980,411,521,605,760
  5. Step 5: Solve for x
    x = 317,980,411,521,605,760/664,261,401.60
  6. Step 6: Final answer
    x = 478,697,709.60

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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.