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Finding the Fourth Proportional to 681,709.65, 940,717.05 and 375,770.22

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Solution

The fourth proportional to 681,709.65, 940,717.05 and 375,770.22 is: 518,539.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,709.65 : 940,717.05 = 375,770.22 : x
  2. Step 2: Convert to fraction form
    681,709.65/940,717.05 = 375,770.22/x
  3. Step 3: Cross multiply
    681,709.65x = 940,717.05 × 375,770.22
  4. Step 4: Simplify right side
    681,709.65x = 353,493,447,899.42
  5. Step 5: Solve for x
    x = 353,493,447,899.42/681,709.65
  6. Step 6: Final answer
    x = 518,539.60

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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.