Home / 810,622.76-1,215,504.02-405,371.68

Finding the Fourth Proportional to 810,622.76, 1,215,504.02 and 405,371.68

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Solution

The fourth proportional to 810,622.76, 1,215,504.02 and 405,371.68 is: 607,842.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    810,622.76 : 1,215,504.02 = 405,371.68 : x
  2. Step 2: Convert to fraction form
    810,622.76/1,215,504.02 = 405,371.68/x
  3. Step 3: Cross multiply
    810,622.76x = 1,215,504.02 × 405,371.68
  4. Step 4: Simplify right side
    810,622.76x = 492,730,906,634.15
  5. Step 5: Solve for x
    x = 492,730,906,634.15/810,622.76
  6. Step 6: Final answer
    x = 607,842.43

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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.