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Finding the Fourth Proportional to 447,073.76, 618,586.42 and 389,832.44

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Solution

The fourth proportional to 447,073.76, 618,586.42 and 389,832.44 is: 539,385.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,073.76 : 618,586.42 = 389,832.44 : x
  2. Step 2: Convert to fraction form
    447,073.76/618,586.42 = 389,832.44/x
  3. Step 3: Cross multiply
    447,073.76x = 618,586.42 × 389,832.44
  4. Step 4: Simplify right side
    447,073.76x = 241,145,053,459.47
  5. Step 5: Solve for x
    x = 241,145,053,459.47/447,073.76
  6. Step 6: Final answer
    x = 539,385.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.