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Finding the Fourth Proportional to 718,994.46, 992,571.90 and 447,149.94

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Solution

The fourth proportional to 718,994.46, 992,571.90 and 447,149.94 is: 617,290.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,994.46 : 992,571.90 = 447,149.94 : x
  2. Step 2: Convert to fraction form
    718,994.46/992,571.90 = 447,149.94/x
  3. Step 3: Cross multiply
    718,994.46x = 992,571.90 × 447,149.94
  4. Step 4: Simplify right side
    718,994.46x = 443,828,465,530.69
  5. Step 5: Solve for x
    x = 443,828,465,530.69/718,994.46
  6. Step 6: Final answer
    x = 617,290.52

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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.