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Finding the Fourth Proportional to 607,136.80, 910,705.20 and 404,183.20

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Solution

The fourth proportional to 607,136.80, 910,705.20 and 404,183.20 is: 606,274.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    607,136.80 : 910,705.20 = 404,183.20 : x
  2. Step 2: Convert to fraction form
    607,136.80/910,705.20 = 404,183.20/x
  3. Step 3: Cross multiply
    607,136.80x = 910,705.20 × 404,183.20
  4. Step 4: Simplify right side
    607,136.80x = 368,091,741,992.64
  5. Step 5: Solve for x
    x = 368,091,741,992.64/607,136.80
  6. Step 6: Final answer
    x = 606,274.80

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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.