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Finding the Fourth Proportional to 557,283.54, 769,286.71 and 376,240.70

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Solution

The fourth proportional to 557,283.54, 769,286.71 and 376,240.70 is: 519,371.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,283.54 : 769,286.71 = 376,240.70 : x
  2. Step 2: Convert to fraction form
    557,283.54/769,286.71 = 376,240.70/x
  3. Step 3: Cross multiply
    557,283.54x = 769,286.71 × 376,240.70
  4. Step 4: Simplify right side
    557,283.54x = 289,436,966,424.66
  5. Step 5: Solve for x
    x = 289,436,966,424.66/557,283.54
  6. Step 6: Final answer
    x = 519,371.10

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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.