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Finding the Fourth Proportional to 450,514.78, 621,780.22 and 256,922.90

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Solution

The fourth proportional to 450,514.78, 621,780.22 and 256,922.90 is: 354,593.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    450,514.78 : 621,780.22 = 256,922.90 : x
  2. Step 2: Convert to fraction form
    450,514.78/621,780.22 = 256,922.90/x
  3. Step 3: Cross multiply
    450,514.78x = 621,780.22 × 256,922.90
  4. Step 4: Simplify right side
    450,514.78x = 159,749,577,285.04
  5. Step 5: Solve for x
    x = 159,749,577,285.04/450,514.78
  6. Step 6: Final answer
    x = 354,593.42

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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.