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Finding the Fourth Proportional to 672,408.40, 1,008,612.60 and 483,451.60

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Solution

The fourth proportional to 672,408.40, 1,008,612.60 and 483,451.60 is: 725,177.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,408.40 : 1,008,612.60 = 483,451.60 : x
  2. Step 2: Convert to fraction form
    672,408.40/1,008,612.60 = 483,451.60/x
  3. Step 3: Cross multiply
    672,408.40x = 1,008,612.60 × 483,451.60
  4. Step 4: Simplify right side
    672,408.40x = 487,615,375,250.16
  5. Step 5: Solve for x
    x = 487,615,375,250.16/672,408.40
  6. Step 6: Final answer
    x = 725,177.40

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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.