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Finding the Fourth Proportional to 655,369.22, 904,557.03 and 428,883.50

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Solution

The fourth proportional to 655,369.22, 904,557.03 and 428,883.50 is: 591,955.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,369.22 : 904,557.03 = 428,883.50 : x
  2. Step 2: Convert to fraction form
    655,369.22/904,557.03 = 428,883.50/x
  3. Step 3: Cross multiply
    655,369.22x = 904,557.03 × 428,883.50
  4. Step 4: Simplify right side
    655,369.22x = 387,949,584,976.01
  5. Step 5: Solve for x
    x = 387,949,584,976.01/655,369.22
  6. Step 6: Final answer
    x = 591,955.76

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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.