Home / 693,139.80-1,039,709.70-219,862.20

Finding the Fourth Proportional to 693,139.80, 1,039,709.70 and 219,862.20

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Solution

The fourth proportional to 693,139.80, 1,039,709.70 and 219,862.20 is: 329,793.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,139.80 : 1,039,709.70 = 219,862.20 : x
  2. Step 2: Convert to fraction form
    693,139.80/1,039,709.70 = 219,862.20/x
  3. Step 3: Cross multiply
    693,139.80x = 1,039,709.70 × 219,862.20
  4. Step 4: Simplify right side
    693,139.80x = 228,592,862,003.34
  5. Step 5: Solve for x
    x = 228,592,862,003.34/693,139.80
  6. Step 6: Final answer
    x = 329,793.30

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Double scale
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Similar ratio
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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.