Home / 668,860,991.90-1,004,047,315.05-396,385,286.30

Finding the Fourth Proportional to 668,860,991.90, 1,004,047,315.05 and 396,385,286.30

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Solution

The fourth proportional to 668,860,991.90, 1,004,047,315.05 and 396,385,286.30 is: 595,025,853.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,860,991.90 : 1,004,047,315.05 = 396,385,286.30 : x
  2. Step 2: Convert to fraction form
    668,860,991.90/1,004,047,315.05 = 396,385,286.30/x
  3. Step 3: Cross multiply
    668,860,991.90x = 1,004,047,315.05 × 396,385,286.30
  4. Step 4: Simplify right side
    668,860,991.90x = 397,989,582,434,840,512
  5. Step 5: Solve for x
    x = 397,989,582,434,840,512/668,860,991.90
  6. Step 6: Final answer
    x = 595,025,853.29

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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.