Home / 621,039.10-932,105.40-368,003.20

Finding the Fourth Proportional to 621,039.10, 932,105.40 and 368,003.20

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Solution

The fourth proportional to 621,039.10, 932,105.40 and 368,003.20 is: 552,328.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,039.10 : 932,105.40 = 368,003.20 : x
  2. Step 2: Convert to fraction form
    621,039.10/932,105.40 = 368,003.20/x
  3. Step 3: Cross multiply
    621,039.10x = 932,105.40 × 368,003.20
  4. Step 4: Simplify right side
    621,039.10x = 343,017,769,937.28
  5. Step 5: Solve for x
    x = 343,017,769,937.28/621,039.10
  6. Step 6: Final answer
    x = 552,328.78

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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.