Home / 786,436,947.72-1,179,847,474.20-261,805,031.28

Finding the Fourth Proportional to 786,436,947.72, 1,179,847,474.20 and 261,805,031.28

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Solution

The fourth proportional to 786,436,947.72, 1,179,847,474.20 and 261,805,031.28 is: 392,771,481.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    786,436,947.72 : 1,179,847,474.20 = 261,805,031.28 : x
  2. Step 2: Convert to fraction form
    786,436,947.72/1,179,847,474.20 = 261,805,031.28/x
  3. Step 3: Cross multiply
    786,436,947.72x = 1,179,847,474.20 × 261,805,031.28
  4. Step 4: Simplify right side
    786,436,947.72x = 308,890,004,888,560,000
  5. Step 5: Solve for x
    x = 308,890,004,888,560,000/786,436,947.72
  6. Step 6: Final answer
    x = 392,771,481.28

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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.