Home / 425,832.07-587,689.68-318,215.20

Finding the Fourth Proportional to 425,832.07, 587,689.68 and 318,215.20

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Solution

The fourth proportional to 425,832.07, 587,689.68 and 318,215.20 is: 439,167.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,832.07 : 587,689.68 = 318,215.20 : x
  2. Step 2: Convert to fraction form
    425,832.07/587,689.68 = 318,215.20/x
  3. Step 3: Cross multiply
    425,832.07x = 587,689.68 × 318,215.20
  4. Step 4: Simplify right side
    425,832.07x = 187,011,789,059.14
  5. Step 5: Solve for x
    x = 187,011,789,059.14/425,832.07
  6. Step 6: Final answer
    x = 439,167.93

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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.