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Finding the Fourth Proportional to 809,361.60, 1,211,277.60 and 709,828.80

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Solution

The fourth proportional to 809,361.60, 1,211,277.60 and 709,828.80 is: 1,062,318.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,361.60 : 1,211,277.60 = 709,828.80 : x
  2. Step 2: Convert to fraction form
    809,361.60/1,211,277.60 = 709,828.80/x
  3. Step 3: Cross multiply
    809,361.60x = 1,211,277.60 × 709,828.80
  4. Step 4: Simplify right side
    809,361.60x = 859,799,725,274.88
  5. Step 5: Solve for x
    x = 859,799,725,274.88/809,361.60
  6. Step 6: Final answer
    x = 1,062,318.41

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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.