Home / 670,358.70-1,005,246.45-220,905.90

Finding the Fourth Proportional to 670,358.70, 1,005,246.45 and 220,905.90

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Solution

The fourth proportional to 670,358.70, 1,005,246.45 and 220,905.90 is: 331,262.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    670,358.70 : 1,005,246.45 = 220,905.90 : x
  2. Step 2: Convert to fraction form
    670,358.70/1,005,246.45 = 220,905.90/x
  3. Step 3: Cross multiply
    670,358.70x = 1,005,246.45 × 220,905.90
  4. Step 4: Simplify right side
    670,358.70x = 222,064,871,759.06
  5. Step 5: Solve for x
    x = 222,064,871,759.06/670,358.70
  6. Step 6: Final answer
    x = 331,262.76

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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.