Home / 726,128.70-1,090,229.85-411,200.70

Finding the Fourth Proportional to 726,128.70, 1,090,229.85 and 411,200.70

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Solution

The fourth proportional to 726,128.70, 1,090,229.85 and 411,200.70 is: 617,388.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    726,128.70 : 1,090,229.85 = 411,200.70 : x
  2. Step 2: Convert to fraction form
    726,128.70/1,090,229.85 = 411,200.70/x
  3. Step 3: Cross multiply
    726,128.70x = 1,090,229.85 × 411,200.70
  4. Step 4: Simplify right side
    726,128.70x = 448,303,277,480.90
  5. Step 5: Solve for x
    x = 448,303,277,480.90/726,128.70
  6. Step 6: Final answer
    x = 617,388.18

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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.