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Finding the Fourth Proportional to 502,435.98, 693,392.65 and 287,571.44

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Solution

The fourth proportional to 502,435.98, 693,392.65 and 287,571.44 is: 396,866.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    502,435.98 : 693,392.65 = 287,571.44 : x
  2. Step 2: Convert to fraction form
    502,435.98/693,392.65 = 287,571.44/x
  3. Step 3: Cross multiply
    502,435.98x = 693,392.65 × 287,571.44
  4. Step 4: Simplify right side
    502,435.98x = 199,399,923,860.47
  5. Step 5: Solve for x
    x = 199,399,923,860.47/502,435.98
  6. Step 6: Final answer
    x = 396,866.33

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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.