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Finding the Fourth Proportional to 436,897.20, 655,345.80 and 394,906.80

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Solution

The fourth proportional to 436,897.20, 655,345.80 and 394,906.80 is: 592,360.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,897.20 : 655,345.80 = 394,906.80 : x
  2. Step 2: Convert to fraction form
    436,897.20/655,345.80 = 394,906.80/x
  3. Step 3: Cross multiply
    436,897.20x = 655,345.80 × 394,906.80
  4. Step 4: Simplify right side
    436,897.20x = 258,800,512,771.44
  5. Step 5: Solve for x
    x = 258,800,512,771.44/436,897.20
  6. Step 6: Final answer
    x = 592,360.20

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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.