Home / 856,401.75-1,284,553.22-257,350.05

Finding the Fourth Proportional to 856,401.75, 1,284,553.22 and 257,350.05

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Solution

The fourth proportional to 856,401.75, 1,284,553.22 and 257,350.05 is: 386,010.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    856,401.75 : 1,284,553.22 = 257,350.05 : x
  2. Step 2: Convert to fraction form
    856,401.75/1,284,553.22 = 257,350.05/x
  3. Step 3: Cross multiply
    856,401.75x = 1,284,553.22 × 257,350.05
  4. Step 4: Simplify right side
    856,401.75x = 330,579,834,107.91
  5. Step 5: Solve for x
    x = 330,579,834,107.91/856,401.75
  6. Step 6: Final answer
    x = 386,010.23

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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.