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Finding the Fourth Proportional to 623,471.28, 860,399.92 and 365,286.45

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Solution

The fourth proportional to 623,471.28, 860,399.92 and 365,286.45 is: 504,100.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,471.28 : 860,399.92 = 365,286.45 : x
  2. Step 2: Convert to fraction form
    623,471.28/860,399.92 = 365,286.45/x
  3. Step 3: Cross multiply
    623,471.28x = 860,399.92 × 365,286.45
  4. Step 4: Simplify right side
    623,471.28x = 314,292,433,620.32
  5. Step 5: Solve for x
    x = 314,292,433,620.32/623,471.28
  6. Step 6: Final answer
    x = 504,100.90

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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.