Home / 1,289,343.42-1,931,357.59-755,245.21

Finding the Fourth Proportional to 1,289,343.42, 1,931,357.59 and 755,245.21

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Solution

The fourth proportional to 1,289,343.42, 1,931,357.59 and 755,245.21 is: 1,131,311.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,289,343.42 : 1,931,357.59 = 755,245.21 : x
  2. Step 2: Convert to fraction form
    1,289,343.42/1,931,357.59 = 755,245.21/x
  3. Step 3: Cross multiply
    1,289,343.42x = 1,931,357.59 × 755,245.21
  4. Step 4: Simplify right side
    1,289,343.42x = 1,458,648,568,644.64
  5. Step 5: Solve for x
    x = 1,458,648,568,644.64/1,289,343.42
  6. Step 6: Final answer
    x = 1,131,311.14

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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.