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Finding the Fourth Proportional to 563,187.78, 777,192.66 and 305,059.86

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Solution

The fourth proportional to 563,187.78, 777,192.66 and 305,059.86 is: 420,979.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    563,187.78 : 777,192.66 = 305,059.86 : x
  2. Step 2: Convert to fraction form
    563,187.78/777,192.66 = 305,059.86/x
  3. Step 3: Cross multiply
    563,187.78x = 777,192.66 × 305,059.86
  4. Step 4: Simplify right side
    563,187.78x = 237,090,284,052.63
  5. Step 5: Solve for x
    x = 237,090,284,052.63/563,187.78
  6. Step 6: Final answer
    x = 420,979.10

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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.