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Finding the Fourth Proportional to 876,407.22, 1,314,756.09 and 307,640.70

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Solution

The fourth proportional to 876,407.22, 1,314,756.09 and 307,640.70 is: 461,512.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    876,407.22 : 1,314,756.09 = 307,640.70 : x
  2. Step 2: Convert to fraction form
    876,407.22/1,314,756.09 = 307,640.70/x
  3. Step 3: Cross multiply
    876,407.22x = 1,314,756.09 × 307,640.70
  4. Step 4: Simplify right side
    876,407.22x = 404,472,483,856.86
  5. Step 5: Solve for x
    x = 404,472,483,856.86/876,407.22
  6. Step 6: Final answer
    x = 461,512.04

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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.