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Finding the Fourth Proportional to 694,346.45, 958,159.56 and 388,363.73

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Solution

The fourth proportional to 694,346.45, 958,159.56 and 388,363.73 is: 535,920.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    694,346.45 : 958,159.56 = 388,363.73 : x
  2. Step 2: Convert to fraction form
    694,346.45/958,159.56 = 388,363.73/x
  3. Step 3: Cross multiply
    694,346.45x = 958,159.56 × 388,363.73
  4. Step 4: Simplify right side
    694,346.45x = 372,114,420,656.76
  5. Step 5: Solve for x
    x = 372,114,420,656.76/694,346.45
  6. Step 6: Final answer
    x = 535,920.39

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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.