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Finding the Fourth Proportional to 655,366.72, 904,553.58 and 428,881

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Solution

The fourth proportional to 655,366.72, 904,553.58 and 428,881 is: 591,952.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,366.72 : 904,553.58 = 428,881 : x
  2. Step 2: Convert to fraction form
    655,366.72/904,553.58 = 428,881/x
  3. Step 3: Cross multiply
    655,366.72x = 904,553.58 × 428,881
  4. Step 4: Simplify right side
    655,366.72x = 387,945,843,943.98
  5. Step 5: Solve for x
    x = 387,945,843,943.98/655,366.72
  6. Step 6: Final answer
    x = 591,952.31

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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.