Home / 391,815,940.86-587,808,941.94-119,179,621.98

Finding the Fourth Proportional to 391,815,940.86, 587,808,941.94 and 119,179,621.98

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Solution

The fourth proportional to 391,815,940.86, 587,808,941.94 and 119,179,621.98 is: 178,795,296.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,815,940.86 : 587,808,941.94 = 119,179,621.98 : x
  2. Step 2: Convert to fraction form
    391,815,940.86/587,808,941.94 = 119,179,621.98/x
  3. Step 3: Cross multiply
    391,815,940.86x = 587,808,941.94 × 119,179,621.98
  4. Step 4: Simplify right side
    391,815,940.86x = 70,054,847,496,872,976
  5. Step 5: Solve for x
    x = 70,054,847,496,872,976/391,815,940.86
  6. Step 6: Final answer
    x = 178,795,296.95

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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.