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Finding the Fourth Proportional to 404,321.40, 606,482.10 and 378,077.40

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Solution

The fourth proportional to 404,321.40, 606,482.10 and 378,077.40 is: 567,116.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,321.40 : 606,482.10 = 378,077.40 : x
  2. Step 2: Convert to fraction form
    404,321.40/606,482.10 = 378,077.40/x
  3. Step 3: Cross multiply
    404,321.40x = 606,482.10 × 378,077.40
  4. Step 4: Simplify right side
    404,321.40x = 229,297,175,514.54
  5. Step 5: Solve for x
    x = 229,297,175,514.54/404,321.40
  6. Step 6: Final answer
    x = 567,116.10

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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.