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Finding the Fourth Proportional to 1,192,944, 1,646,262.72 and 656,400

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Solution

The fourth proportional to 1,192,944, 1,646,262.72 and 656,400 is: 905,832

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,192,944 : 1,646,262.72 = 656,400 : x
  2. Step 2: Convert to fraction form
    1,192,944/1,646,262.72 = 656,400/x
  3. Step 3: Cross multiply
    1,192,944x = 1,646,262.72 × 656,400
  4. Step 4: Simplify right side
    1,192,944x = 1,080,606,849,408
  5. Step 5: Solve for x
    x = 1,080,606,849,408/1,192,944
  6. Step 6: Final answer
    x = 905,832

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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.