Home / 826,714.38-1,240,071.66-258,144.20

Finding the Fourth Proportional to 826,714.38, 1,240,071.66 and 258,144.20

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Solution

The fourth proportional to 826,714.38, 1,240,071.66 and 258,144.20 is: 387,216.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    826,714.38 : 1,240,071.66 = 258,144.20 : x
  2. Step 2: Convert to fraction form
    826,714.38/1,240,071.66 = 258,144.20/x
  3. Step 3: Cross multiply
    826,714.38x = 1,240,071.66 × 258,144.20
  4. Step 4: Simplify right side
    826,714.38x = 320,117,305,063.28
  5. Step 5: Solve for x
    x = 320,117,305,063.28/826,714.38
  6. Step 6: Final answer
    x = 387,216.32

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Half scale
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Double scale
Find fourth proportional to 826,715.38, 1,240,073.16 and 258,145.20
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.