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Finding the Fourth Proportional to 549,401.90, 823,118.70 and 338,793.80

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Solution

The fourth proportional to 549,401.90, 823,118.70 and 338,793.80 is: 507,583.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    549,401.90 : 823,118.70 = 338,793.80 : x
  2. Step 2: Convert to fraction form
    549,401.90/823,118.70 = 338,793.80/x
  3. Step 3: Cross multiply
    549,401.90x = 823,118.70 × 338,793.80
  4. Step 4: Simplify right side
    549,401.90x = 278,867,512,224.06
  5. Step 5: Solve for x
    x = 278,867,512,224.06/549,401.90
  6. Step 6: Final answer
    x = 507,583.81

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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.