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Finding the Fourth Proportional to 520,694.87, 718,625.39 and 291,264.90

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Solution

The fourth proportional to 520,694.87, 718,625.39 and 291,264.90 is: 401,982.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,694.87 : 718,625.39 = 291,264.90 : x
  2. Step 2: Convert to fraction form
    520,694.87/718,625.39 = 291,264.90/x
  3. Step 3: Cross multiply
    520,694.87x = 718,625.39 × 291,264.90
  4. Step 4: Simplify right side
    520,694.87x = 209,310,348,762.68
  5. Step 5: Solve for x
    x = 209,310,348,762.68/520,694.87
  6. Step 6: Final answer
    x = 401,982.74

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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.