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Finding the Fourth Proportional to 768,716.76, 1,153,286.52 and 369,691.32

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Solution

The fourth proportional to 768,716.76, 1,153,286.52 and 369,691.32 is: 554,638.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,716.76 : 1,153,286.52 = 369,691.32 : x
  2. Step 2: Convert to fraction form
    768,716.76/1,153,286.52 = 369,691.32/x
  3. Step 3: Cross multiply
    768,716.76x = 1,153,286.52 × 369,691.32
  4. Step 4: Simplify right side
    768,716.76x = 426,360,015,917.01
  5. Step 5: Solve for x
    x = 426,360,015,917.01/768,716.76
  6. Step 6: Final answer
    x = 554,638.64

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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.