Home / 502,434.11-693,390.06-287,569.57

Finding the Fourth Proportional to 502,434.11, 693,390.06 and 287,569.57

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Solution

The fourth proportional to 502,434.11, 693,390.06 and 287,569.57 is: 396,863.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    502,434.11 : 693,390.06 = 287,569.57 : x
  2. Step 2: Convert to fraction form
    502,434.11/693,390.06 = 287,569.57/x
  3. Step 3: Cross multiply
    502,434.11x = 693,390.06 × 287,569.57
  4. Step 4: Simplify right side
    502,434.11x = 199,397,879,663.00
  5. Step 5: Solve for x
    x = 199,397,879,663.00/502,434.11
  6. Step 6: Final answer
    x = 396,863.74

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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.