Home / 386,505.05-579,922.81-199,647.77

Finding the Fourth Proportional to 386,505.05, 579,922.81 and 199,647.77

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Solution

The fourth proportional to 386,505.05, 579,922.81 and 199,647.77 is: 299,557.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,505.05 : 579,922.81 = 199,647.77 : x
  2. Step 2: Convert to fraction form
    386,505.05/579,922.81 = 199,647.77/x
  3. Step 3: Cross multiply
    386,505.05x = 579,922.81 × 199,647.77
  4. Step 4: Simplify right side
    386,505.05x = 115,780,292,389.90
  5. Step 5: Solve for x
    x = 115,780,292,389.90/386,505.05
  6. Step 6: Final answer
    x = 299,557.00

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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.