Home / 805,632,251.20-1,208,946,040.80-320,907,515.20

Finding the Fourth Proportional to 805,632,251.20, 1,208,946,040.80 and 320,907,515.20

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Solution

The fourth proportional to 805,632,251.20, 1,208,946,040.80 and 320,907,515.20 is: 481,559,507.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    805,632,251.20 : 1,208,946,040.80 = 320,907,515.20 : x
  2. Step 2: Convert to fraction form
    805,632,251.20/1,208,946,040.80 = 320,907,515.20/x
  3. Step 3: Cross multiply
    805,632,251.20x = 1,208,946,040.80 × 320,907,515.20
  4. Step 4: Simplify right side
    805,632,251.20x = 387,959,869,964,005,760
  5. Step 5: Solve for x
    x = 387,959,869,964,005,760/805,632,251.20
  6. Step 6: Final answer
    x = 481,559,507.31

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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.