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Finding the Fourth Proportional to 486,342.76, 729,771 and 345,100.72

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Solution

The fourth proportional to 486,342.76, 729,771 and 345,100.72 is: 517,833.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,342.76 : 729,771 = 345,100.72 : x
  2. Step 2: Convert to fraction form
    486,342.76/729,771 = 345,100.72/x
  3. Step 3: Cross multiply
    486,342.76x = 729,771 × 345,100.72
  4. Step 4: Simplify right side
    486,342.76x = 251,844,497,535.12
  5. Step 5: Solve for x
    x = 251,844,497,535.12/486,342.76
  6. Step 6: Final answer
    x = 517,833.34

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.