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Finding the Fourth Proportional to 627,223.80, 865,643.04 and 372,576

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Solution

The fourth proportional to 627,223.80, 865,643.04 and 372,576 is: 514,198.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,223.80 : 865,643.04 = 372,576 : x
  2. Step 2: Convert to fraction form
    627,223.80/865,643.04 = 372,576/x
  3. Step 3: Cross multiply
    627,223.80x = 865,643.04 × 372,576
  4. Step 4: Simplify right side
    627,223.80x = 322,517,821,271.04
  5. Step 5: Solve for x
    x = 322,517,821,271.04/627,223.80
  6. Step 6: Final answer
    x = 514,198.95

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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.