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Finding the Fourth Proportional to 655,851.26, 905,139.30 and 383,902.68

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Solution

The fourth proportional to 655,851.26, 905,139.30 and 383,902.68 is: 529,823.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,851.26 : 905,139.30 = 383,902.68 : x
  2. Step 2: Convert to fraction form
    655,851.26/905,139.30 = 383,902.68/x
  3. Step 3: Cross multiply
    655,851.26x = 905,139.30 × 383,902.68
  4. Step 4: Simplify right side
    655,851.26x = 347,485,403,043.32
  5. Step 5: Solve for x
    x = 347,485,403,043.32/655,851.26
  6. Step 6: Final answer
    x = 529,823.49

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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.