Home / 439,288.20-657,620.10-261,703.80

Finding the Fourth Proportional to 439,288.20, 657,620.10 and 261,703.80

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Solution

The fourth proportional to 439,288.20, 657,620.10 and 261,703.80 is: 391,773.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,288.20 : 657,620.10 = 261,703.80 : x
  2. Step 2: Convert to fraction form
    439,288.20/657,620.10 = 261,703.80/x
  3. Step 3: Cross multiply
    439,288.20x = 657,620.10 × 261,703.80
  4. Step 4: Simplify right side
    439,288.20x = 172,101,679,126.38
  5. Step 5: Solve for x
    x = 172,101,679,126.38/439,288.20
  6. Step 6: Final answer
    x = 391,773.96

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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.