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Finding the Fourth Proportional to 539,690.25, 744,838.17 and 313,335.75

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Solution

The fourth proportional to 539,690.25, 744,838.17 and 313,335.75 is: 432,441.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,690.25 : 744,838.17 = 313,335.75 : x
  2. Step 2: Convert to fraction form
    539,690.25/744,838.17 = 313,335.75/x
  3. Step 3: Cross multiply
    539,690.25x = 744,838.17 × 313,335.75
  4. Step 4: Simplify right side
    539,690.25x = 233,384,426,625.58
  5. Step 5: Solve for x
    x = 233,384,426,625.58/539,690.25
  6. Step 6: Final answer
    x = 432,441.44

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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.