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Finding the Fourth Proportional to 655,992.48, 905,149.38 and 369,451.20

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Solution

The fourth proportional to 655,992.48, 905,149.38 and 369,451.20 is: 509,774.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,992.48 : 905,149.38 = 369,451.20 : x
  2. Step 2: Convert to fraction form
    655,992.48/905,149.38 = 369,451.20/x
  3. Step 3: Cross multiply
    655,992.48x = 905,149.38 × 369,451.20
  4. Step 4: Simplify right side
    655,992.48x = 334,408,524,620.26
  5. Step 5: Solve for x
    x = 334,408,524,620.26/655,992.48
  6. Step 6: Final answer
    x = 509,774.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.