Home / 653,999.20-981,625.20-338,682.40

Finding the Fourth Proportional to 653,999.20, 981,625.20 and 338,682.40

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Solution

The fourth proportional to 653,999.20, 981,625.20 and 338,682.40 is: 508,347.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    653,999.20 : 981,625.20 = 338,682.40 : x
  2. Step 2: Convert to fraction form
    653,999.20/981,625.20 = 338,682.40/x
  3. Step 3: Cross multiply
    653,999.20x = 981,625.20 × 338,682.40
  4. Step 4: Simplify right side
    653,999.20x = 332,459,178,636.48
  5. Step 5: Solve for x
    x = 332,459,178,636.48/653,999.20
  6. Step 6: Final answer
    x = 508,347.99

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Similar ratio
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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.