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Finding the Fourth Proportional to 976,906.60, 1,463,415.90 and 860,007.40

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Solution

The fourth proportional to 976,906.60, 1,463,415.90 and 860,007.40 is: 1,288,299.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    976,906.60 : 1,463,415.90 = 860,007.40 : x
  2. Step 2: Convert to fraction form
    976,906.60/1,463,415.90 = 860,007.40/x
  3. Step 3: Cross multiply
    976,906.60x = 1,463,415.90 × 860,007.40
  4. Step 4: Simplify right side
    976,906.60x = 1,258,548,503,277.66
  5. Step 5: Solve for x
    x = 1,258,548,503,277.66/976,906.60
  6. Step 6: Final answer
    x = 1,288,299.72

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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.