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Finding the Fourth Proportional to 753,532.56, 1,039,843.44 and 447,636.87

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Solution

The fourth proportional to 753,532.56, 1,039,843.44 and 447,636.87 is: 617,720.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    753,532.56 : 1,039,843.44 = 447,636.87 : x
  2. Step 2: Convert to fraction form
    753,532.56/1,039,843.44 = 447,636.87/x
  3. Step 3: Cross multiply
    753,532.56x = 1,039,843.44 × 447,636.87
  4. Step 4: Simplify right side
    753,532.56x = 465,472,262,771.63
  5. Step 5: Solve for x
    x = 465,472,262,771.63/753,532.56
  6. Step 6: Final answer
    x = 617,720.17

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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.