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Finding the Fourth Proportional to 458,496.21, 686,849.61 and 300,244.89

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Solution

The fourth proportional to 458,496.21, 686,849.61 and 300,244.89 is: 449,781.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,496.21 : 686,849.61 = 300,244.89 : x
  2. Step 2: Convert to fraction form
    458,496.21/686,849.61 = 300,244.89/x
  3. Step 3: Cross multiply
    458,496.21x = 686,849.61 × 300,244.89
  4. Step 4: Simplify right side
    458,496.21x = 206,223,085,600.99
  5. Step 5: Solve for x
    x = 206,223,085,600.99/458,496.21
  6. Step 6: Final answer
    x = 449,781.44

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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.