Home / 939,438.90-1,296,489.78-531,540.72

Finding the Fourth Proportional to 939,438.90, 1,296,489.78 and 531,540.72

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Solution

The fourth proportional to 939,438.90, 1,296,489.78 and 531,540.72 is: 733,562.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    939,438.90 : 1,296,489.78 = 531,540.72 : x
  2. Step 2: Convert to fraction form
    939,438.90/1,296,489.78 = 531,540.72/x
  3. Step 3: Cross multiply
    939,438.90x = 1,296,489.78 × 531,540.72
  4. Step 4: Simplify right side
    939,438.90x = 689,137,111,133.84
  5. Step 5: Solve for x
    x = 689,137,111,133.84/939,438.90
  6. Step 6: Final answer
    x = 733,562.46

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.