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Finding the Fourth Proportional to 692,222.88, 955,086.48 and 405,589.28

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Solution

The fourth proportional to 692,222.88, 955,086.48 and 405,589.28 is: 559,607.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    692,222.88 : 955,086.48 = 405,589.28 : x
  2. Step 2: Convert to fraction form
    692,222.88/955,086.48 = 405,589.28/x
  3. Step 3: Cross multiply
    692,222.88x = 955,086.48 × 405,589.28
  4. Step 4: Simplify right side
    692,222.88x = 387,372,837,760.93
  5. Step 5: Solve for x
    x = 387,372,837,760.93/692,222.88
  6. Step 6: Final answer
    x = 559,607.10

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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.