Home / 668,861,049.40-1,004,047,401.30-396,385,343.80

Finding the Fourth Proportional to 668,861,049.40, 1,004,047,401.30 and 396,385,343.80

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Solution

The fourth proportional to 668,861,049.40, 1,004,047,401.30 and 396,385,343.80 is: 595,025,939.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,861,049.40 : 1,004,047,401.30 = 396,385,343.80 : x
  2. Step 2: Convert to fraction form
    668,861,049.40/1,004,047,401.30 = 396,385,343.80/x
  3. Step 3: Cross multiply
    668,861,049.40x = 1,004,047,401.30 × 396,385,343.80
  4. Step 4: Simplify right side
    668,861,049.40x = 397,989,674,355,797,056
  5. Step 5: Solve for x
    x = 397,989,674,355,797,056/668,861,049.40
  6. Step 6: Final answer
    x = 595,025,939.56

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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.