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Finding the Fourth Proportional to 681,485.61, 940,491.24 and 375,561.18

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Solution

The fourth proportional to 681,485.61, 940,491.24 and 375,561.18 is: 518,297.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,485.61 : 940,491.24 = 375,561.18 : x
  2. Step 2: Convert to fraction form
    681,485.61/940,491.24 = 375,561.18/x
  3. Step 3: Cross multiply
    681,485.61x = 940,491.24 × 375,561.18
  4. Step 4: Simplify right side
    681,485.61x = 353,211,999,874.06
  5. Step 5: Solve for x
    x = 353,211,999,874.06/681,485.61
  6. Step 6: Final answer
    x = 518,297.08

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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.