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Finding the Fourth Proportional to 879,213.60, 1,318,806 and 280,166.58

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Solution

The fourth proportional to 879,213.60, 1,318,806 and 280,166.58 is: 420,245.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,213.60 : 1,318,806 = 280,166.58 : x
  2. Step 2: Convert to fraction form
    879,213.60/1,318,806 = 280,166.58/x
  3. Step 3: Cross multiply
    879,213.60x = 1,318,806 × 280,166.58
  4. Step 4: Simplify right side
    879,213.60x = 369,485,366,703.48
  5. Step 5: Solve for x
    x = 369,485,366,703.48/879,213.60
  6. Step 6: Final answer
    x = 420,245.28

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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.