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Finding the Fourth Proportional to 520,899.92, 718,712.28 and 303,144.32

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Solution

The fourth proportional to 520,899.92, 718,712.28 and 303,144.32 is: 418,263.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,899.92 : 718,712.28 = 303,144.32 : x
  2. Step 2: Convert to fraction form
    520,899.92/718,712.28 = 303,144.32/x
  3. Step 3: Cross multiply
    520,899.92x = 718,712.28 × 303,144.32
  4. Step 4: Simplify right side
    520,899.92x = 217,873,545,396.25
  5. Step 5: Solve for x
    x = 217,873,545,396.25/520,899.92
  6. Step 6: Final answer
    x = 418,263.73

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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.