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Finding the Fourth Proportional to 502,866.09, 693,897.03 and 287,993.34

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Solution

The fourth proportional to 502,866.09, 693,897.03 and 287,993.34 is: 397,397.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    502,866.09 : 693,897.03 = 287,993.34 : x
  2. Step 2: Convert to fraction form
    502,866.09/693,897.03 = 287,993.34/x
  3. Step 3: Cross multiply
    502,866.09x = 693,897.03 × 287,993.34
  4. Step 4: Simplify right side
    502,866.09x = 199,837,723,285.78
  5. Step 5: Solve for x
    x = 199,837,723,285.78/502,866.09
  6. Step 6: Final answer
    x = 397,397.49

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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.