Home / 668,861,029.40-1,004,047,371.30-396,385,323.80

Finding the Fourth Proportional to 668,861,029.40, 1,004,047,371.30 and 396,385,323.80

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Solution

The fourth proportional to 668,861,029.40, 1,004,047,371.30 and 396,385,323.80 is: 595,025,909.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,861,029.40 : 1,004,047,371.30 = 396,385,323.80 : x
  2. Step 2: Convert to fraction form
    668,861,029.40/1,004,047,371.30 = 396,385,323.80/x
  3. Step 3: Cross multiply
    668,861,029.40x = 1,004,047,371.30 × 396,385,323.80
  4. Step 4: Simplify right side
    668,861,029.40x = 397,989,642,383,289,344
  5. Step 5: Solve for x
    x = 397,989,642,383,289,344/668,861,029.40
  6. Step 6: Final answer
    x = 595,025,909.55

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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.