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Finding the Fourth Proportional to 810,455.64, 1,118,372.76 and 447,876

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Solution

The fourth proportional to 810,455.64, 1,118,372.76 and 447,876 is: 618,037.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    810,455.64 : 1,118,372.76 = 447,876 : x
  2. Step 2: Convert to fraction form
    810,455.64/1,118,372.76 = 447,876/x
  3. Step 3: Cross multiply
    810,455.64x = 1,118,372.76 × 447,876
  4. Step 4: Simplify right side
    810,455.64x = 500,892,318,257.76
  5. Step 5: Solve for x
    x = 500,892,318,257.76/810,455.64
  6. Step 6: Final answer
    x = 618,037.92

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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.