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Finding the Fourth Proportional to 879,876, 1,319,814 and 318,911.04

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Solution

The fourth proportional to 879,876, 1,319,814 and 318,911.04 is: 478,366.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,876 : 1,319,814 = 318,911.04 : x
  2. Step 2: Convert to fraction form
    879,876/1,319,814 = 318,911.04/x
  3. Step 3: Cross multiply
    879,876x = 1,319,814 × 318,911.04
  4. Step 4: Simplify right side
    879,876x = 420,903,255,346.56
  5. Step 5: Solve for x
    x = 420,903,255,346.56/879,876
  6. Step 6: Final answer
    x = 478,366.56

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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.