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Finding the Fourth Proportional to 500,772.08, 691,042.92 and 274,412.72

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Solution

The fourth proportional to 500,772.08, 691,042.92 and 274,412.72 is: 378,677.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,772.08 : 691,042.92 = 274,412.72 : x
  2. Step 2: Convert to fraction form
    500,772.08/691,042.92 = 274,412.72/x
  3. Step 3: Cross multiply
    500,772.08x = 691,042.92 × 274,412.72
  4. Step 4: Simplify right side
    500,772.08x = 189,630,967,313.94
  5. Step 5: Solve for x
    x = 189,630,967,313.94/500,772.08
  6. Step 6: Final answer
    x = 378,677.20

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.