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Finding the Fourth Proportional to 681,664.50, 940,703.58 and 375,752.66

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Solution

The fourth proportional to 681,664.50, 940,703.58 and 375,752.66 is: 518,542.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,664.50 : 940,703.58 = 375,752.66 : x
  2. Step 2: Convert to fraction form
    681,664.50/940,703.58 = 375,752.66/x
  3. Step 3: Cross multiply
    681,664.50x = 940,703.58 × 375,752.66
  4. Step 4: Simplify right side
    681,664.50x = 353,471,867,753.01
  5. Step 5: Solve for x
    x = 353,471,867,753.01/681,664.50
  6. Step 6: Final answer
    x = 518,542.29

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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.