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Finding the Fourth Proportional to 557,817.68, 769,788.47 and 303,168.86

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Solution

The fourth proportional to 557,817.68, 769,788.47 and 303,168.86 is: 418,373.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,817.68 : 769,788.47 = 303,168.86 : x
  2. Step 2: Convert to fraction form
    557,817.68/769,788.47 = 303,168.86/x
  3. Step 3: Cross multiply
    557,817.68x = 769,788.47 × 303,168.86
  4. Step 4: Simplify right side
    557,817.68x = 233,375,892,891.04
  5. Step 5: Solve for x
    x = 233,375,892,891.04/557,817.68
  6. Step 6: Final answer
    x = 418,373.07

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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.