Home / 683,221.20-1,024,856.10-209,905.80

Finding the Fourth Proportional to 683,221.20, 1,024,856.10 and 209,905.80

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Solution

The fourth proportional to 683,221.20, 1,024,856.10 and 209,905.80 is: 314,866.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    683,221.20 : 1,024,856.10 = 209,905.80 : x
  2. Step 2: Convert to fraction form
    683,221.20/1,024,856.10 = 209,905.80/x
  3. Step 3: Cross multiply
    683,221.20x = 1,024,856.10 × 209,905.80
  4. Step 4: Simplify right side
    683,221.20x = 215,123,239,555.38
  5. Step 5: Solve for x
    x = 215,123,239,555.38/683,221.20
  6. Step 6: Final answer
    x = 314,866.17

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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.