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Finding the Fourth Proportional to 448,674.30, 672,027.30 and 389,625.30

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Solution

The fourth proportional to 448,674.30, 672,027.30 and 389,625.30 is: 583,583.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,674.30 : 672,027.30 = 389,625.30 : x
  2. Step 2: Convert to fraction form
    448,674.30/672,027.30 = 389,625.30/x
  3. Step 3: Cross multiply
    448,674.30x = 672,027.30 × 389,625.30
  4. Step 4: Simplify right side
    448,674.30x = 261,838,838,370.69
  5. Step 5: Solve for x
    x = 261,838,838,370.69/448,674.30
  6. Step 6: Final answer
    x = 583,583.32

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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.