Home / 523,328,989.46-722,198,848.84-288,388,057.73

Finding the Fourth Proportional to 523,328,989.46, 722,198,848.84 and 288,388,057.73

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Solution

The fourth proportional to 523,328,989.46, 722,198,848.84 and 288,388,057.73 is: 397,978,188.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    523,328,989.46 : 722,198,848.84 = 288,388,057.73 : x
  2. Step 2: Convert to fraction form
    523,328,989.46/722,198,848.84 = 288,388,057.73/x
  3. Step 3: Cross multiply
    523,328,989.46x = 722,198,848.84 × 288,388,057.73
  4. Step 4: Simplify right side
    523,328,989.46x = 208,273,523,307,477,504
  5. Step 5: Solve for x
    x = 208,273,523,307,477,504/523,328,989.46
  6. Step 6: Final answer
    x = 397,978,188.68

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.