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Finding the Fourth Proportional to 638,658.40, 958,333.20 and 283,727.20

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Solution

The fourth proportional to 638,658.40, 958,333.20 and 283,727.20 is: 425,744.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,658.40 : 958,333.20 = 283,727.20 : x
  2. Step 2: Convert to fraction form
    638,658.40/958,333.20 = 283,727.20/x
  3. Step 3: Cross multiply
    638,658.40x = 958,333.20 × 283,727.20
  4. Step 4: Simplify right side
    638,658.40x = 271,905,195,503.04
  5. Step 5: Solve for x
    x = 271,905,195,503.04/638,658.40
  6. Step 6: Final answer
    x = 425,744.33

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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.