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Finding the Fourth Proportional to 627,972.52, 865,687.62 and 476,807.08

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Solution

The fourth proportional to 627,972.52, 865,687.62 and 476,807.08 is: 657,299.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,972.52 : 865,687.62 = 476,807.08 : x
  2. Step 2: Convert to fraction form
    627,972.52/865,687.62 = 476,807.08/x
  3. Step 3: Cross multiply
    627,972.52x = 865,687.62 × 476,807.08
  4. Step 4: Simplify right side
    627,972.52x = 412,765,986,284.35
  5. Step 5: Solve for x
    x = 412,765,986,284.35/627,972.52
  6. Step 6: Final answer
    x = 657,299.44

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1.5x scale

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.