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Finding the Fourth Proportional to 681,424.12, 940,418.40 and 375,555.34

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Solution

The fourth proportional to 681,424.12, 940,418.40 and 375,555.34 is: 518,295.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,424.12 : 940,418.40 = 375,555.34 : x
  2. Step 2: Convert to fraction form
    681,424.12/940,418.40 = 375,555.34/x
  3. Step 3: Cross multiply
    681,424.12x = 940,418.40 × 375,555.34
  4. Step 4: Simplify right side
    681,424.12x = 353,179,151,954.26
  5. Step 5: Solve for x
    x = 353,179,151,954.26/681,424.12
  6. Step 6: Final answer
    x = 518,295.64

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1.5x scale

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.