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Finding the Fourth Proportional to 636,295.64, 878,090.28 and 349,833.88

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Solution

The fourth proportional to 636,295.64, 878,090.28 and 349,833.88 is: 482,772.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,295.64 : 878,090.28 = 349,833.88 : x
  2. Step 2: Convert to fraction form
    636,295.64/878,090.28 = 349,833.88/x
  3. Step 3: Cross multiply
    636,295.64x = 878,090.28 × 349,833.88
  4. Step 4: Simplify right side
    636,295.64x = 307,185,729,642.69
  5. Step 5: Solve for x
    x = 307,185,729,642.69/636,295.64
  6. Step 6: Final answer
    x = 482,772.02

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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.