Home / 668,861,028.40-1,004,047,369.80-396,385,322.80

Finding the Fourth Proportional to 668,861,028.40, 1,004,047,369.80 and 396,385,322.80

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Solution

The fourth proportional to 668,861,028.40, 1,004,047,369.80 and 396,385,322.80 is: 595,025,908.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,861,028.40 : 1,004,047,369.80 = 396,385,322.80 : x
  2. Step 2: Convert to fraction form
    668,861,028.40/1,004,047,369.80 = 396,385,322.80/x
  3. Step 3: Cross multiply
    668,861,028.40x = 1,004,047,369.80 × 396,385,322.80
  4. Step 4: Simplify right side
    668,861,028.40x = 397,989,640,784,663,936
  5. Step 5: Solve for x
    x = 397,989,640,784,663,936/668,861,028.40
  6. Step 6: Final answer
    x = 595,025,908.05

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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.