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Finding the Fourth Proportional to 703,649.33, 971,040.87 and 381,364.81

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Solution

The fourth proportional to 703,649.33, 971,040.87 and 381,364.81 is: 526,286.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    703,649.33 : 971,040.87 = 381,364.81 : x
  2. Step 2: Convert to fraction form
    703,649.33/971,040.87 = 381,364.81/x
  3. Step 3: Cross multiply
    703,649.33x = 971,040.87 × 381,364.81
  4. Step 4: Simplify right side
    703,649.33x = 370,320,814,998.48
  5. Step 5: Solve for x
    x = 370,320,814,998.48/703,649.33
  6. Step 6: Final answer
    x = 526,286.03

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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.