Home / 1,324,955.42-1,987,433.75-426,397.05

Finding the Fourth Proportional to 1,324,955.42, 1,987,433.75 and 426,397.05

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Solution

The fourth proportional to 1,324,955.42, 1,987,433.75 and 426,397.05 is: 639,595.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,324,955.42 : 1,987,433.75 = 426,397.05 : x
  2. Step 2: Convert to fraction form
    1,324,955.42/1,987,433.75 = 426,397.05/x
  3. Step 3: Cross multiply
    1,324,955.42x = 1,987,433.75 × 426,397.05
  4. Step 4: Simplify right side
    1,324,955.42x = 847,435,889,136.43
  5. Step 5: Solve for x
    x = 847,435,889,136.43/1,324,955.42
  6. Step 6: Final answer
    x = 639,595.78

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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.