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Finding the Fourth Proportional to 1,321,249.17, 1,823,293.49 and 769,929.77

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Solution

The fourth proportional to 1,321,249.17, 1,823,293.49 and 769,929.77 is: 1,062,485.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,321,249.17 : 1,823,293.49 = 769,929.77 : x
  2. Step 2: Convert to fraction form
    1,321,249.17/1,823,293.49 = 769,929.77/x
  3. Step 3: Cross multiply
    1,321,249.17x = 1,823,293.49 × 769,929.77
  4. Step 4: Simplify right side
    1,321,249.17x = 1,403,807,924,432.08
  5. Step 5: Solve for x
    x = 1,403,807,924,432.08/1,321,249.17
  6. Step 6: Final answer
    x = 1,062,485.38

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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.