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Finding the Fourth Proportional to 452,309.82, 681,715.88 and 389,883.39

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Solution

The fourth proportional to 452,309.82, 681,715.88 and 389,883.39 is: 587,627.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    452,309.82 : 681,715.88 = 389,883.39 : x
  2. Step 2: Convert to fraction form
    452,309.82/681,715.88 = 389,883.39/x
  3. Step 3: Cross multiply
    452,309.82x = 681,715.88 × 389,883.39
  4. Step 4: Simplify right side
    452,309.82x = 265,789,696,361.82
  5. Step 5: Solve for x
    x = 265,789,696,361.82/452,309.82
  6. Step 6: Final answer
    x = 587,627.52

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.