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Finding the Fourth Proportional to 536,902.60, 805,613.10 and 378,790.60

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Solution

The fourth proportional to 536,902.60, 805,613.10 and 378,790.60 is: 568,368.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    536,902.60 : 805,613.10 = 378,790.60 : x
  2. Step 2: Convert to fraction form
    536,902.60/805,613.10 = 378,790.60/x
  3. Step 3: Cross multiply
    536,902.60x = 805,613.10 × 378,790.60
  4. Step 4: Simplify right side
    536,902.60x = 305,158,669,516.86
  5. Step 5: Solve for x
    x = 305,158,669,516.86/536,902.60
  6. Step 6: Final answer
    x = 568,368.77

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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.