Home / 643,317.26-887,778.69-356,837.34

Finding the Fourth Proportional to 643,317.26, 887,778.69 and 356,837.34

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Solution

The fourth proportional to 643,317.26, 887,778.69 and 356,837.34 is: 492,436.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,317.26 : 887,778.69 = 356,837.34 : x
  2. Step 2: Convert to fraction form
    643,317.26/887,778.69 = 356,837.34/x
  3. Step 3: Cross multiply
    643,317.26x = 887,778.69 × 356,837.34
  4. Step 4: Simplify right side
    643,317.26x = 316,792,586,248.29
  5. Step 5: Solve for x
    x = 316,792,586,248.29/643,317.26
  6. Step 6: Final answer
    x = 492,436.02

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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.