Home / 721,629,389.65-1,082,603,516.73-261,555,601.54

Finding the Fourth Proportional to 721,629,389.65, 1,082,603,516.73 and 261,555,601.54

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Solution

The fourth proportional to 721,629,389.65, 1,082,603,516.73 and 261,555,601.54 is: 392,391,188.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,629,389.65 : 1,082,603,516.73 = 261,555,601.54 : x
  2. Step 2: Convert to fraction form
    721,629,389.65/1,082,603,516.73 = 261,555,601.54/x
  3. Step 3: Cross multiply
    721,629,389.65x = 1,082,603,516.73 × 261,555,601.54
  4. Step 4: Simplify right side
    721,629,389.65x = 283,161,014,047,634,592
  5. Step 5: Solve for x
    x = 283,161,014,047,634,592/721,629,389.65
  6. Step 6: Final answer
    x = 392,391,188.76

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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.