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Finding the Fourth Proportional to 627,053.84, 865,340.52 and 340,576.88

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Solution

The fourth proportional to 627,053.84, 865,340.52 and 340,576.88 is: 469,999.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,053.84 : 865,340.52 = 340,576.88 : x
  2. Step 2: Convert to fraction form
    627,053.84/865,340.52 = 340,576.88/x
  3. Step 3: Cross multiply
    627,053.84x = 865,340.52 × 340,576.88
  4. Step 4: Simplify right side
    627,053.84x = 294,714,974,439.18
  5. Step 5: Solve for x
    x = 294,714,974,439.18/627,053.84
  6. Step 6: Final answer
    x = 469,999.47

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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.