Home / 513,296,732.40-769,850,620.20-318,860,185.20

Finding the Fourth Proportional to 513,296,732.40, 769,850,620.20 and 318,860,185.20

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Solution

The fourth proportional to 513,296,732.40, 769,850,620.20 and 318,860,185.20 is: 478,231,587.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,296,732.40 : 769,850,620.20 = 318,860,185.20 : x
  2. Step 2: Convert to fraction form
    513,296,732.40/769,850,620.20 = 318,860,185.20/x
  3. Step 3: Cross multiply
    513,296,732.40x = 769,850,620.20 × 318,860,185.20
  4. Step 4: Simplify right side
    513,296,732.40x = 245,474,711,333,306,880
  5. Step 5: Solve for x
    x = 245,474,711,333,306,880/513,296,732.40
  6. Step 6: Final answer
    x = 478,231,587.77

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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.