Home / 426,623.24-639,687.27-201,981.77

Finding the Fourth Proportional to 426,623.24, 639,687.27 and 201,981.77

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Solution

The fourth proportional to 426,623.24, 639,687.27 and 201,981.77 is: 302,855.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,623.24 : 639,687.27 = 201,981.77 : x
  2. Step 2: Convert to fraction form
    426,623.24/639,687.27 = 201,981.77/x
  3. Step 3: Cross multiply
    426,623.24x = 639,687.27 × 201,981.77
  4. Step 4: Simplify right side
    426,623.24x = 129,205,163,842.63
  5. Step 5: Solve for x
    x = 129,205,163,842.63/426,623.24
  6. Step 6: Final answer
    x = 302,855.43

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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.