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Finding the Fourth Proportional to 663,308.15, 915,368.27 and 376,843.95

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Solution

The fourth proportional to 663,308.15, 915,368.27 and 376,843.95 is: 520,046.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,308.15 : 915,368.27 = 376,843.95 : x
  2. Step 2: Convert to fraction form
    663,308.15/915,368.27 = 376,843.95/x
  3. Step 3: Cross multiply
    663,308.15x = 915,368.27 × 376,843.95
  4. Step 4: Simplify right side
    663,308.15x = 344,950,992,687.25
  5. Step 5: Solve for x
    x = 344,950,992,687.25/663,308.15
  6. Step 6: Final answer
    x = 520,046.37

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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.