Home / 693,511,682.80-1,040,289,452.52-256,921,630.96

Finding the Fourth Proportional to 693,511,682.80, 1,040,289,452.52 and 256,921,630.96

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Solution

The fourth proportional to 693,511,682.80, 1,040,289,452.52 and 256,921,630.96 is: 385,390,570.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,511,682.80 : 1,040,289,452.52 = 256,921,630.96 : x
  2. Step 2: Convert to fraction form
    693,511,682.80/1,040,289,452.52 = 256,921,630.96/x
  3. Step 3: Cross multiply
    693,511,682.80x = 1,040,289,452.52 × 256,921,630.96
  4. Step 4: Simplify right side
    693,511,682.80x = 267,272,862,811,923,872
  5. Step 5: Solve for x
    x = 267,272,862,811,923,872/693,511,682.80
  6. Step 6: Final answer
    x = 385,390,570.11

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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.