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Finding the Fourth Proportional to 647,631.43, 893,735.28 and 361,169.65

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Solution

The fourth proportional to 647,631.43, 893,735.28 and 361,169.65 is: 498,416.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,631.43 : 893,735.28 = 361,169.65 : x
  2. Step 2: Convert to fraction form
    647,631.43/893,735.28 = 361,169.65/x
  3. Step 3: Cross multiply
    647,631.43x = 893,735.28 × 361,169.65
  4. Step 4: Simplify right side
    647,631.43x = 322,790,058,270.25
  5. Step 5: Solve for x
    x = 322,790,058,270.25/647,631.43
  6. Step 6: Final answer
    x = 498,416.30

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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.