Home / 809,999.60-1,214,999.40-763,343.60

Finding the Fourth Proportional to 809,999.60, 1,214,999.40 and 763,343.60

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Solution

The fourth proportional to 809,999.60, 1,214,999.40 and 763,343.60 is: 1,145,015.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,999.60 : 1,214,999.40 = 763,343.60 : x
  2. Step 2: Convert to fraction form
    809,999.60/1,214,999.40 = 763,343.60/x
  3. Step 3: Cross multiply
    809,999.60x = 1,214,999.40 × 763,343.60
  4. Step 4: Simplify right side
    809,999.60x = 927,462,015,993.84
  5. Step 5: Solve for x
    x = 927,462,015,993.84/809,999.60
  6. Step 6: Final answer
    x = 1,145,015.40

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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.