Home / 557,321.28-769,338.48-376,278.24

Finding the Fourth Proportional to 557,321.28, 769,338.48 and 376,278.24

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Solution

The fourth proportional to 557,321.28, 769,338.48 and 376,278.24 is: 519,422.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,321.28 : 769,338.48 = 376,278.24 : x
  2. Step 2: Convert to fraction form
    557,321.28/769,338.48 = 376,278.24/x
  3. Step 3: Cross multiply
    557,321.28x = 769,338.48 × 376,278.24
  4. Step 4: Simplify right side
    557,321.28x = 289,485,329,218.68
  5. Step 5: Solve for x
    x = 289,485,329,218.68/557,321.28
  6. Step 6: Final answer
    x = 519,422.71

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Double scale
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Similar ratio
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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.