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Finding the Fourth Proportional to 647,995.48, 894,231.28 and 361,515.76

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Solution

The fourth proportional to 647,995.48, 894,231.28 and 361,515.76 is: 498,890.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,995.48 : 894,231.28 = 361,515.76 : x
  2. Step 2: Convert to fraction form
    647,995.48/894,231.28 = 361,515.76/x
  3. Step 3: Cross multiply
    647,995.48x = 894,231.28 × 361,515.76
  4. Step 4: Simplify right side
    647,995.48x = 323,278,700,804.97
  5. Step 5: Solve for x
    x = 323,278,700,804.97/647,995.48
  6. Step 6: Final answer
    x = 498,890.36

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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.