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Finding the Fourth Proportional to 665,864.62, 997,634.31 and 554,262.28

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Solution

The fourth proportional to 665,864.62, 997,634.31 and 554,262.28 is: 830,425.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,864.62 : 997,634.31 = 554,262.28 : x
  2. Step 2: Convert to fraction form
    665,864.62/997,634.31 = 554,262.28/x
  3. Step 3: Cross multiply
    665,864.62x = 997,634.31 × 554,262.28
  4. Step 4: Simplify right side
    665,864.62x = 552,951,067,266.83
  5. Step 5: Solve for x
    x = 552,951,067,266.83/665,864.62
  6. Step 6: Final answer
    x = 830,425.66

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.