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Finding the Fourth Proportional to 655,843.08, 905,128.02 and 383,894.52

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Solution

The fourth proportional to 655,843.08, 905,128.02 and 383,894.52 is: 529,812.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,843.08 : 905,128.02 = 383,894.52 : x
  2. Step 2: Convert to fraction form
    655,843.08/905,128.02 = 383,894.52/x
  3. Step 3: Cross multiply
    655,843.08x = 905,128.02 × 383,894.52
  4. Step 4: Simplify right side
    655,843.08x = 347,473,686,776.45
  5. Step 5: Solve for x
    x = 347,473,686,776.45/655,843.08
  6. Step 6: Final answer
    x = 529,812.23

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.