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Finding the Fourth Proportional to 892,400.60, 1,230,472.32 and 665,652.44

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Solution

The fourth proportional to 892,400.60, 1,230,472.32 and 665,652.44 is: 917,824.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    892,400.60 : 1,230,472.32 = 665,652.44 : x
  2. Step 2: Convert to fraction form
    892,400.60/1,230,472.32 = 665,652.44/x
  3. Step 3: Cross multiply
    892,400.60x = 1,230,472.32 × 665,652.44
  4. Step 4: Simplify right side
    892,400.60x = 819,066,902,160.46
  5. Step 5: Solve for x
    x = 819,066,902,160.46/892,400.60
  6. Step 6: Final answer
    x = 917,824.24

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.