Home / 809,494.96-1,214,128.32-509,059.60

Finding the Fourth Proportional to 809,494.96, 1,214,128.32 and 509,059.60

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Solution

The fourth proportional to 809,494.96, 1,214,128.32 and 509,059.60 is: 763,517.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,494.96 : 1,214,128.32 = 509,059.60 : x
  2. Step 2: Convert to fraction form
    809,494.96/1,214,128.32 = 509,059.60/x
  3. Step 3: Cross multiply
    809,494.96x = 1,214,128.32 × 509,059.60
  4. Step 4: Simplify right side
    809,494.96x = 618,063,676,927.87
  5. Step 5: Solve for x
    x = 618,063,676,927.87/809,494.96
  6. Step 6: Final answer
    x = 763,517.63

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Double scale
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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.