Home / 870,181.50-1,305,272.25-309,238.14

Finding the Fourth Proportional to 870,181.50, 1,305,272.25 and 309,238.14

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Solution

The fourth proportional to 870,181.50, 1,305,272.25 and 309,238.14 is: 463,857.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,181.50 : 1,305,272.25 = 309,238.14 : x
  2. Step 2: Convert to fraction form
    870,181.50/1,305,272.25 = 309,238.14/x
  3. Step 3: Cross multiply
    870,181.50x = 1,305,272.25 × 309,238.14
  4. Step 4: Simplify right side
    870,181.50x = 403,639,962,783.62
  5. Step 5: Solve for x
    x = 403,639,962,783.62/870,181.50
  6. Step 6: Final answer
    x = 463,857.21

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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.