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Finding the Fourth Proportional to 879,658.60, 1,318,451.10 and 374,218.60

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Solution

The fourth proportional to 879,658.60, 1,318,451.10 and 374,218.60 is: 560,886.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,658.60 : 1,318,451.10 = 374,218.60 : x
  2. Step 2: Convert to fraction form
    879,658.60/1,318,451.10 = 374,218.60/x
  3. Step 3: Cross multiply
    879,658.60x = 1,318,451.10 × 374,218.60
  4. Step 4: Simplify right side
    879,658.60x = 493,388,924,810.46
  5. Step 5: Solve for x
    x = 493,388,924,810.46/879,658.60
  6. Step 6: Final answer
    x = 560,886.83

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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.