Home / 693,209.80-1,039,814.70-219,932.20

Finding the Fourth Proportional to 693,209.80, 1,039,814.70 and 219,932.20

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Solution

The fourth proportional to 693,209.80, 1,039,814.70 and 219,932.20 is: 329,898.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,209.80 : 1,039,814.70 = 219,932.20 : x
  2. Step 2: Convert to fraction form
    693,209.80/1,039,814.70 = 219,932.20/x
  3. Step 3: Cross multiply
    693,209.80x = 1,039,814.70 × 219,932.20
  4. Step 4: Simplify right side
    693,209.80x = 228,688,734,563.34
  5. Step 5: Solve for x
    x = 228,688,734,563.34/693,209.80
  6. Step 6: Final answer
    x = 329,898.30

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Double scale
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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.