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Finding the Fourth Proportional to 655,420.32, 983,716.38 and 335,790

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Solution

The fourth proportional to 655,420.32, 983,716.38 and 335,790 is: 503,985.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,420.32 : 983,716.38 = 335,790 : x
  2. Step 2: Convert to fraction form
    655,420.32/983,716.38 = 335,790/x
  3. Step 3: Cross multiply
    655,420.32x = 983,716.38 × 335,790
  4. Step 4: Simplify right side
    655,420.32x = 330,322,123,240.20
  5. Step 5: Solve for x
    x = 330,322,123,240.20/655,420.32
  6. Step 6: Final answer
    x = 503,985.17

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.