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Finding the Fourth Proportional to 378,790.40, 568,841.70 and 366,980.60

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Solution

The fourth proportional to 378,790.40, 568,841.70 and 366,980.60 is: 551,106.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,790.40 : 568,841.70 = 366,980.60 : x
  2. Step 2: Convert to fraction form
    378,790.40/568,841.70 = 366,980.60/x
  3. Step 3: Cross multiply
    378,790.40x = 568,841.70 × 366,980.60
  4. Step 4: Simplify right side
    378,790.40x = 208,753,868,371.02
  5. Step 5: Solve for x
    x = 208,753,868,371.02/378,790.40
  6. Step 6: Final answer
    x = 551,106.54

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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.