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Finding the Fourth Proportional to 563,121.66, 777,108.04 and 308,481.90

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Solution

The fourth proportional to 563,121.66, 777,108.04 and 308,481.90 is: 425,705.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    563,121.66 : 777,108.04 = 308,481.90 : x
  2. Step 2: Convert to fraction form
    563,121.66/777,108.04 = 308,481.90/x
  3. Step 3: Cross multiply
    563,121.66x = 777,108.04 × 308,481.90
  4. Step 4: Simplify right side
    563,121.66x = 239,723,764,684.48
  5. Step 5: Solve for x
    x = 239,723,764,684.48/563,121.66
  6. Step 6: Final answer
    x = 425,705.10

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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.