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Finding the Fourth Proportional to 551,725.66, 761,729.97 and 361,061.38

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Solution

The fourth proportional to 551,725.66, 761,729.97 and 361,061.38 is: 498,492.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,725.66 : 761,729.97 = 361,061.38 : x
  2. Step 2: Convert to fraction form
    551,725.66/761,729.97 = 361,061.38/x
  3. Step 3: Cross multiply
    551,725.66x = 761,729.97 × 361,061.38
  4. Step 4: Simplify right side
    551,725.66x = 275,031,274,155.56
  5. Step 5: Solve for x
    x = 275,031,274,155.56/551,725.66
  6. Step 6: Final answer
    x = 498,492.81

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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.