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Finding the Fourth Proportional to 629,264.30, 868,320 and 353,578.37

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Solution

The fourth proportional to 629,264.30, 868,320 and 353,578.37 is: 487,901.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,264.30 : 868,320 = 353,578.37 : x
  2. Step 2: Convert to fraction form
    629,264.30/868,320 = 353,578.37/x
  3. Step 3: Cross multiply
    629,264.30x = 868,320 × 353,578.37
  4. Step 4: Simplify right side
    629,264.30x = 307,019,165,896.80
  5. Step 5: Solve for x
    x = 307,019,165,896.80/629,264.30
  6. Step 6: Final answer
    x = 487,901.77

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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.