Home / 805,873,187.20-1,208,809,780.80-260,669,833.60

Finding the Fourth Proportional to 805,873,187.20, 1,208,809,780.80 and 260,669,833.60

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Solution

The fourth proportional to 805,873,187.20, 1,208,809,780.80 and 260,669,833.60 is: 391,004,750.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    805,873,187.20 : 1,208,809,780.80 = 260,669,833.60 : x
  2. Step 2: Convert to fraction form
    805,873,187.20/1,208,809,780.80 = 260,669,833.60/x
  3. Step 3: Cross multiply
    805,873,187.20x = 1,208,809,780.80 × 260,669,833.60
  4. Step 4: Simplify right side
    805,873,187.20x = 315,100,244,415,188,480
  5. Step 5: Solve for x
    x = 315,100,244,415,188,480/805,873,187.20
  6. Step 6: Final answer
    x = 391,004,750.40

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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.