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Finding the Fourth Proportional to 502,397.97, 693,268.97 and 287,488.77

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Solution

The fourth proportional to 502,397.97, 693,268.97 and 287,488.77 is: 396,711.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    502,397.97 : 693,268.97 = 287,488.77 : x
  2. Step 2: Convert to fraction form
    502,397.97/693,268.97 = 287,488.77/x
  3. Step 3: Cross multiply
    502,397.97x = 693,268.97 × 287,488.77
  4. Step 4: Simplify right side
    502,397.97x = 199,307,043,464.47
  5. Step 5: Solve for x
    x = 199,307,043,464.47/502,397.97
  6. Step 6: Final answer
    x = 396,711.48

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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.