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Finding the Fourth Proportional to 479,934.72, 661,932 and 447,742.08

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Solution

The fourth proportional to 479,934.72, 661,932 and 447,742.08 is: 617,531.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,934.72 : 661,932 = 447,742.08 : x
  2. Step 2: Convert to fraction form
    479,934.72/661,932 = 447,742.08/x
  3. Step 3: Cross multiply
    479,934.72x = 661,932 × 447,742.08
  4. Step 4: Simplify right side
    479,934.72x = 296,374,810,498.56
  5. Step 5: Solve for x
    x = 296,374,810,498.56/479,934.72
  6. Step 6: Final answer
    x = 617,531.51

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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.