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Finding the Fourth Proportional to 543,998.40, 815,997.60 and 483,345.60

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Solution

The fourth proportional to 543,998.40, 815,997.60 and 483,345.60 is: 725,018.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,998.40 : 815,997.60 = 483,345.60 : x
  2. Step 2: Convert to fraction form
    543,998.40/815,997.60 = 483,345.60/x
  3. Step 3: Cross multiply
    543,998.40x = 815,997.60 × 483,345.60
  4. Step 4: Simplify right side
    543,998.40x = 394,408,849,570.56
  5. Step 5: Solve for x
    x = 394,408,849,570.56/543,998.40
  6. Step 6: Final answer
    x = 725,018.40

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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.