Home / 426,511.98-639,259.02-198,500.76

Finding the Fourth Proportional to 426,511.98, 639,259.02 and 198,500.76

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Solution

The fourth proportional to 426,511.98, 639,259.02 and 198,500.76 is: 297,514.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,511.98 : 639,259.02 = 198,500.76 : x
  2. Step 2: Convert to fraction form
    426,511.98/639,259.02 = 198,500.76/x
  3. Step 3: Cross multiply
    426,511.98x = 639,259.02 × 198,500.76
  4. Step 4: Simplify right side
    426,511.98x = 126,893,401,306.86
  5. Step 5: Solve for x
    x = 126,893,401,306.86/426,511.98
  6. Step 6: Final answer
    x = 297,514.27

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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.