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Finding the Fourth Proportional to 1,192,644, 1,645,848.72 and 656,100

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Solution

The fourth proportional to 1,192,644, 1,645,848.72 and 656,100 is: 905,418

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,192,644 : 1,645,848.72 = 656,100 : x
  2. Step 2: Convert to fraction form
    1,192,644/1,645,848.72 = 656,100/x
  3. Step 3: Cross multiply
    1,192,644x = 1,645,848.72 × 656,100
  4. Step 4: Simplify right side
    1,192,644x = 1,079,841,345,192
  5. Step 5: Solve for x
    x = 1,079,841,345,192/1,192,644
  6. Step 6: Final answer
    x = 905,418

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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.