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Finding the Fourth Proportional to 655,888.78, 981,611.06 and 403,329.24

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Solution

The fourth proportional to 655,888.78, 981,611.06 and 403,329.24 is: 603,627.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,888.78 : 981,611.06 = 403,329.24 : x
  2. Step 2: Convert to fraction form
    655,888.78/981,611.06 = 403,329.24/x
  3. Step 3: Cross multiply
    655,888.78x = 981,611.06 × 403,329.24
  4. Step 4: Simplify right side
    655,888.78x = 395,912,438,620.19
  5. Step 5: Solve for x
    x = 395,912,438,620.19/655,888.78
  6. Step 6: Final answer
    x = 603,627.40

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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.