Home / 668,861,086.40-1,004,047,456.80-396,385,380.80

Finding the Fourth Proportional to 668,861,086.40, 1,004,047,456.80 and 396,385,380.80

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Solution

The fourth proportional to 668,861,086.40, 1,004,047,456.80 and 396,385,380.80 is: 595,025,995.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,861,086.40 : 1,004,047,456.80 = 396,385,380.80 : x
  2. Step 2: Convert to fraction form
    668,861,086.40/1,004,047,456.80 = 396,385,380.80/x
  3. Step 3: Cross multiply
    668,861,086.40x = 1,004,047,456.80 × 396,385,380.80
  4. Step 4: Simplify right side
    668,861,086.40x = 397,989,733,504,939,520
  5. Step 5: Solve for x
    x = 397,989,733,504,939,520/668,861,086.40
  6. Step 6: Final answer
    x = 595,025,995.08

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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.