Home / 809,991.40-1,214,403.90-455,114.20

Finding the Fourth Proportional to 809,991.40, 1,214,403.90 and 455,114.20

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Solution

The fourth proportional to 809,991.40, 1,214,403.90 and 455,114.20 is: 682,343.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,991.40 : 1,214,403.90 = 455,114.20 : x
  2. Step 2: Convert to fraction form
    809,991.40/1,214,403.90 = 455,114.20/x
  3. Step 3: Cross multiply
    809,991.40x = 1,214,403.90 × 455,114.20
  4. Step 4: Simplify right side
    809,991.40x = 552,692,459,425.38
  5. Step 5: Solve for x
    x = 552,692,459,425.38/809,991.40
  6. Step 6: Final answer
    x = 682,343.61

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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.