Home / 687,584.40-1,031,522.40-207,772.80

Finding the Fourth Proportional to 687,584.40, 1,031,522.40 and 207,772.80

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Solution

The fourth proportional to 687,584.40, 1,031,522.40 and 207,772.80 is: 311,703.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,584.40 : 1,031,522.40 = 207,772.80 : x
  2. Step 2: Convert to fraction form
    687,584.40/1,031,522.40 = 207,772.80/x
  3. Step 3: Cross multiply
    687,584.40x = 1,031,522.40 × 207,772.80
  4. Step 4: Simplify right side
    687,584.40x = 214,322,297,310.72
  5. Step 5: Solve for x
    x = 214,322,297,310.72/687,584.40
  6. Step 6: Final answer
    x = 311,703.26

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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.