Home / 668,860,990.90-1,004,047,313.55-396,385,285.30

Finding the Fourth Proportional to 668,860,990.90, 1,004,047,313.55 and 396,385,285.30

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Solution

The fourth proportional to 668,860,990.90, 1,004,047,313.55 and 396,385,285.30 is: 595,025,851.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,860,990.90 : 1,004,047,313.55 = 396,385,285.30 : x
  2. Step 2: Convert to fraction form
    668,860,990.90/1,004,047,313.55 = 396,385,285.30/x
  3. Step 3: Cross multiply
    668,860,990.90x = 1,004,047,313.55 × 396,385,285.30
  4. Step 4: Simplify right side
    668,860,990.90x = 397,989,580,836,215,296
  5. Step 5: Solve for x
    x = 397,989,580,836,215,296/668,860,990.90
  6. Step 6: Final answer
    x = 595,025,851.79

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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.