Home / 810,059.36-1,215,084.65-330,285.30

Finding the Fourth Proportional to 810,059.36, 1,215,084.65 and 330,285.30

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Solution

The fourth proportional to 810,059.36, 1,215,084.65 and 330,285.30 is: 495,426.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    810,059.36 : 1,215,084.65 = 330,285.30 : x
  2. Step 2: Convert to fraction form
    810,059.36/1,215,084.65 = 330,285.30/x
  3. Step 3: Cross multiply
    810,059.36x = 1,215,084.65 × 330,285.30
  4. Step 4: Simplify right side
    810,059.36x = 401,324,595,769.15
  5. Step 5: Solve for x
    x = 401,324,595,769.15/810,059.36
  6. Step 6: Final answer
    x = 495,426.16

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Double scale
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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.