Home / 1,324,955.80-1,987,434.32-426,397.43

Finding the Fourth Proportional to 1,324,955.80, 1,987,434.32 and 426,397.43

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Solution

The fourth proportional to 1,324,955.80, 1,987,434.32 and 426,397.43 is: 639,596.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,324,955.80 : 1,987,434.32 = 426,397.43 : x
  2. Step 2: Convert to fraction form
    1,324,955.80/1,987,434.32 = 426,397.43/x
  3. Step 3: Cross multiply
    1,324,955.80x = 1,987,434.32 × 426,397.43
  4. Step 4: Simplify right side
    1,324,955.80x = 847,436,874,272.64
  5. Step 5: Solve for x
    x = 847,436,874,272.64/1,324,955.80
  6. Step 6: Final answer
    x = 639,596.34

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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.