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Finding the Fourth Proportional to 809,871.80, 1,117,633.80 and 447,294.56

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Solution

The fourth proportional to 809,871.80, 1,117,633.80 and 447,294.56 is: 617,272.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,871.80 : 1,117,633.80 = 447,294.56 : x
  2. Step 2: Convert to fraction form
    809,871.80/1,117,633.80 = 447,294.56/x
  3. Step 3: Cross multiply
    809,871.80x = 1,117,633.80 × 447,294.56
  4. Step 4: Simplify right side
    809,871.80x = 499,911,518,812.13
  5. Step 5: Solve for x
    x = 499,911,518,812.13/809,871.80
  6. Step 6: Final answer
    x = 617,272.41

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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.