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Finding the Fourth Proportional to 681,780.27, 940,859.65 and 375,849.65

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Solution

The fourth proportional to 681,780.27, 940,859.65 and 375,849.65 is: 518,674.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,780.27 : 940,859.65 = 375,849.65 : x
  2. Step 2: Convert to fraction form
    681,780.27/940,859.65 = 375,849.65/x
  3. Step 3: Cross multiply
    681,780.27x = 940,859.65 × 375,849.65
  4. Step 4: Simplify right side
    681,780.27x = 353,621,772,973.58
  5. Step 5: Solve for x
    x = 353,621,772,973.58/681,780.27
  6. Step 6: Final answer
    x = 518,674.10

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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.