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Finding the Fourth Proportional to 703,728.84, 971,249.56 and 445,629.35

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Solution

The fourth proportional to 703,728.84, 971,249.56 and 445,629.35 is: 615,034.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    703,728.84 : 971,249.56 = 445,629.35 : x
  2. Step 2: Convert to fraction form
    703,728.84/971,249.56 = 445,629.35/x
  3. Step 3: Cross multiply
    703,728.84x = 971,249.56 × 445,629.35
  4. Step 4: Simplify right side
    703,728.84x = 432,817,307,882.44
  5. Step 5: Solve for x
    x = 432,817,307,882.44/703,728.84
  6. Step 6: Final answer
    x = 615,034.21

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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.