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Finding the Fourth Proportional to 557,296.28, 769,304.34 and 376,253.48

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Solution

The fourth proportional to 557,296.28, 769,304.34 and 376,253.48 is: 519,388.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,296.28 : 769,304.34 = 376,253.48 : x
  2. Step 2: Convert to fraction form
    557,296.28/769,304.34 = 376,253.48/x
  3. Step 3: Cross multiply
    557,296.28x = 769,304.34 × 376,253.48
  4. Step 4: Simplify right side
    557,296.28x = 289,453,435,104.10
  5. Step 5: Solve for x
    x = 289,453,435,104.10/557,296.28
  6. Step 6: Final answer
    x = 519,388.78

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1.5x scale

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.