Home / 866,375.28-1,297,028.88-505,442.40

Finding the Fourth Proportional to 866,375.28, 1,297,028.88 and 505,442.40

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Solution

The fourth proportional to 866,375.28, 1,297,028.88 and 505,442.40 is: 756,685.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    866,375.28 : 1,297,028.88 = 505,442.40 : x
  2. Step 2: Convert to fraction form
    866,375.28/1,297,028.88 = 505,442.40/x
  3. Step 3: Cross multiply
    866,375.28x = 1,297,028.88 × 505,442.40
  4. Step 4: Simplify right side
    866,375.28x = 655,573,389,976.51
  5. Step 5: Solve for x
    x = 655,573,389,976.51/866,375.28
  6. Step 6: Final answer
    x = 756,685.24

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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.