Home / 545,740.20-819,096.30-320,819.40

Finding the Fourth Proportional to 545,740.20, 819,096.30 and 320,819.40

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Solution

The fourth proportional to 545,740.20, 819,096.30 and 320,819.40 is: 481,514.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,740.20 : 819,096.30 = 320,819.40 : x
  2. Step 2: Convert to fraction form
    545,740.20/819,096.30 = 320,819.40/x
  3. Step 3: Cross multiply
    545,740.20x = 819,096.30 × 320,819.40
  4. Step 4: Simplify right side
    545,740.20x = 262,781,983,508.22
  5. Step 5: Solve for x
    x = 262,781,983,508.22/545,740.20
  6. Step 6: Final answer
    x = 481,514.80

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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.