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Finding the Fourth Proportional to 622,781.80, 932,790.30 and 248,612.20

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Solution

The fourth proportional to 622,781.80, 932,790.30 and 248,612.20 is: 372,366.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    622,781.80 : 932,790.30 = 248,612.20 : x
  2. Step 2: Convert to fraction form
    622,781.80/932,790.30 = 248,612.20/x
  3. Step 3: Cross multiply
    622,781.80x = 932,790.30 × 248,612.20
  4. Step 4: Simplify right side
    622,781.80x = 231,903,048,621.66
  5. Step 5: Solve for x
    x = 231,903,048,621.66/622,781.80
  6. Step 6: Final answer
    x = 372,366.45

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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.