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Finding the Fourth Proportional to 478,636.91, 660,518.94 and 263,776.97

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Solution

The fourth proportional to 478,636.91, 660,518.94 and 263,776.97 is: 364,012.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,636.91 : 660,518.94 = 263,776.97 : x
  2. Step 2: Convert to fraction form
    478,636.91/660,518.94 = 263,776.97/x
  3. Step 3: Cross multiply
    478,636.91x = 660,518.94 × 263,776.97
  4. Step 4: Simplify right side
    478,636.91x = 174,229,687,238.66
  5. Step 5: Solve for x
    x = 174,229,687,238.66/478,636.91
  6. Step 6: Final answer
    x = 364,012.23

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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.