Home / 726,738.90-1,090,497.15-306,057.30

Finding the Fourth Proportional to 726,738.90, 1,090,497.15 and 306,057.30

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Solution

The fourth proportional to 726,738.90, 1,090,497.15 and 306,057.30 is: 459,249.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    726,738.90 : 1,090,497.15 = 306,057.30 : x
  2. Step 2: Convert to fraction form
    726,738.90/1,090,497.15 = 306,057.30/x
  3. Step 3: Cross multiply
    726,738.90x = 1,090,497.15 × 306,057.30
  4. Step 4: Simplify right side
    726,738.90x = 333,754,613,386.70
  5. Step 5: Solve for x
    x = 333,754,613,386.70/726,738.90
  6. Step 6: Final answer
    x = 459,249.69

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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.