Home / 880,288.20-1,320,432.30-407,896.20

Finding the Fourth Proportional to 880,288.20, 1,320,432.30 and 407,896.20

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Solution

The fourth proportional to 880,288.20, 1,320,432.30 and 407,896.20 is: 611,844.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    880,288.20 : 1,320,432.30 = 407,896.20 : x
  2. Step 2: Convert to fraction form
    880,288.20/1,320,432.30 = 407,896.20/x
  3. Step 3: Cross multiply
    880,288.20x = 1,320,432.30 × 407,896.20
  4. Step 4: Simplify right side
    880,288.20x = 538,599,317,527.26
  5. Step 5: Solve for x
    x = 538,599,317,527.26/880,288.20
  6. Step 6: Final answer
    x = 611,844.30

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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.