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Finding the Fourth Proportional to 655,371.22, 904,559.79 and 428,885.50

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Solution

The fourth proportional to 655,371.22, 904,559.79 and 428,885.50 is: 591,958.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,371.22 : 904,559.79 = 428,885.50 : x
  2. Step 2: Convert to fraction form
    655,371.22/904,559.79 = 428,885.50/x
  3. Step 3: Cross multiply
    655,371.22x = 904,559.79 × 428,885.50
  4. Step 4: Simplify right side
    655,371.22x = 387,952,577,814.05
  5. Step 5: Solve for x
    x = 387,952,577,814.05/655,371.22
  6. Step 6: Final answer
    x = 591,958.52

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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.