Home / 426,288,113.01-639,454,751.69-131,385,783.86

Finding the Fourth Proportional to 426,288,113.01, 639,454,751.69 and 131,385,783.86

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Solution

The fourth proportional to 426,288,113.01, 639,454,751.69 and 131,385,783.86 is: 197,085,635.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,288,113.01 : 639,454,751.69 = 131,385,783.86 : x
  2. Step 2: Convert to fraction form
    426,288,113.01/639,454,751.69 = 131,385,783.86/x
  3. Step 3: Cross multiply
    426,288,113.01x = 639,454,751.69 × 131,385,783.86
  4. Step 4: Simplify right side
    426,288,113.01x = 84,015,263,790,923,504
  5. Step 5: Solve for x
    x = 84,015,263,790,923,504/426,288,113.01
  6. Step 6: Final answer
    x = 197,085,635.81

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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.