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Finding the Fourth Proportional to 442,026.40, 662,258.80 and 427,408.80

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Solution

The fourth proportional to 442,026.40, 662,258.80 and 427,408.80 is: 640,358.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,026.40 : 662,258.80 = 427,408.80 : x
  2. Step 2: Convert to fraction form
    442,026.40/662,258.80 = 427,408.80/x
  3. Step 3: Cross multiply
    442,026.40x = 662,258.80 × 427,408.80
  4. Step 4: Simplify right side
    442,026.40x = 283,055,238,997.44
  5. Step 5: Solve for x
    x = 283,055,238,997.44/442,026.40
  6. Step 6: Final answer
    x = 640,358.22

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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.