Home / 638,419.98-881,022.24-351,933.78

Finding the Fourth Proportional to 638,419.98, 881,022.24 and 351,933.78

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Solution

The fourth proportional to 638,419.98, 881,022.24 and 351,933.78 is: 485,670.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,419.98 : 881,022.24 = 351,933.78 : x
  2. Step 2: Convert to fraction form
    638,419.98/881,022.24 = 351,933.78/x
  3. Step 3: Cross multiply
    638,419.98x = 881,022.24 × 351,933.78
  4. Step 4: Simplify right side
    638,419.98x = 310,061,487,187.27
  5. Step 5: Solve for x
    x = 310,061,487,187.27/638,419.98
  6. Step 6: Final answer
    x = 485,670.09

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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.