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Finding the Fourth Proportional to 453,676.40, 680,514.60 and 311,958.80

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Solution

The fourth proportional to 453,676.40, 680,514.60 and 311,958.80 is: 467,938.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,676.40 : 680,514.60 = 311,958.80 : x
  2. Step 2: Convert to fraction form
    453,676.40/680,514.60 = 311,958.80/x
  3. Step 3: Cross multiply
    453,676.40x = 680,514.60 × 311,958.80
  4. Step 4: Simplify right side
    453,676.40x = 212,292,517,998.48
  5. Step 5: Solve for x
    x = 212,292,517,998.48/453,676.40
  6. Step 6: Final answer
    x = 467,938.20

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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.