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Finding the Fourth Proportional to 550,000.80, 823,618.80 and 439,408.80

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Solution

The fourth proportional to 550,000.80, 823,618.80 and 439,408.80 is: 658,008.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    550,000.80 : 823,618.80 = 439,408.80 : x
  2. Step 2: Convert to fraction form
    550,000.80/823,618.80 = 439,408.80/x
  3. Step 3: Cross multiply
    550,000.80x = 823,618.80 × 439,408.80
  4. Step 4: Simplify right side
    550,000.80x = 361,905,348,565.44
  5. Step 5: Solve for x
    x = 361,905,348,565.44/550,000.80
  6. Step 6: Final answer
    x = 658,008.77

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1.5x scale

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.