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Finding the Fourth Proportional to 521,888.67, 718,604.87 and 456,986.61

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Solution

The fourth proportional to 521,888.67, 718,604.87 and 456,986.61 is: 629,239.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,888.67 : 718,604.87 = 456,986.61 : x
  2. Step 2: Convert to fraction form
    521,888.67/718,604.87 = 456,986.61/x
  3. Step 3: Cross multiply
    521,888.67x = 718,604.87 × 456,986.61
  4. Step 4: Simplify right side
    521,888.67x = 328,392,801,185.86
  5. Step 5: Solve for x
    x = 328,392,801,185.86/521,888.67
  6. Step 6: Final answer
    x = 629,239.18

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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.