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Finding the Fourth Proportional to 557,276.65, 769,277.19 and 376,233.80

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Solution

The fourth proportional to 557,276.65, 769,277.19 and 376,233.80 is: 519,361.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,276.65 : 769,277.19 = 376,233.80 : x
  2. Step 2: Convert to fraction form
    557,276.65/769,277.19 = 376,233.80/x
  3. Step 3: Cross multiply
    557,276.65x = 769,277.19 × 376,233.80
  4. Step 4: Simplify right side
    557,276.65x = 289,428,082,338.70
  5. Step 5: Solve for x
    x = 289,428,082,338.70/557,276.65
  6. Step 6: Final answer
    x = 519,361.58

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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.