Home / 643,468.26-887,985.84-353,081.73

Finding the Fourth Proportional to 643,468.26, 887,985.84 and 353,081.73

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Solution

The fourth proportional to 643,468.26, 887,985.84 and 353,081.73 is: 487,252.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,468.26 : 887,985.84 = 353,081.73 : x
  2. Step 2: Convert to fraction form
    643,468.26/887,985.84 = 353,081.73/x
  3. Step 3: Cross multiply
    643,468.26x = 887,985.84 × 353,081.73
  4. Step 4: Simplify right side
    643,468.26x = 313,531,576,602.70
  5. Step 5: Solve for x
    x = 313,531,576,602.70/643,468.26
  6. Step 6: Final answer
    x = 487,252.59

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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.