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Finding the Fourth Proportional to 1,203,996, 1,661,773.68 and 720,669

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Solution

The fourth proportional to 1,203,996, 1,661,773.68 and 720,669 is: 994,678.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,203,996 : 1,661,773.68 = 720,669 : x
  2. Step 2: Convert to fraction form
    1,203,996/1,661,773.68 = 720,669/x
  3. Step 3: Cross multiply
    1,203,996x = 1,661,773.68 × 720,669
  4. Step 4: Simplify right side
    1,203,996x = 1,197,588,776,191.92
  5. Step 5: Solve for x
    x = 1,197,588,776,191.92/1,203,996
  6. Step 6: Final answer
    x = 994,678.37

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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.