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Finding the Fourth Proportional to 965,609.80, 1,449,969.90 and 729,219.40

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Solution

The fourth proportional to 965,609.80, 1,449,969.90 and 729,219.40 is: 1,095,003.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    965,609.80 : 1,449,969.90 = 729,219.40 : x
  2. Step 2: Convert to fraction form
    965,609.80/1,449,969.90 = 729,219.40/x
  3. Step 3: Cross multiply
    965,609.80x = 1,449,969.90 × 729,219.40
  4. Step 4: Simplify right side
    965,609.80x = 1,057,346,180,496.06
  5. Step 5: Solve for x
    x = 1,057,346,180,496.06/965,609.80
  6. Step 6: Final answer
    x = 1,095,003.57

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.