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Finding the Fourth Proportional to 703,185.35, 970,326.27 and 393,029.87

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Solution

The fourth proportional to 703,185.35, 970,326.27 and 393,029.87 is: 542,342.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    703,185.35 : 970,326.27 = 393,029.87 : x
  2. Step 2: Convert to fraction form
    703,185.35/970,326.27 = 393,029.87/x
  3. Step 3: Cross multiply
    703,185.35x = 970,326.27 × 393,029.87
  4. Step 4: Simplify right side
    703,185.35x = 381,367,207,755.69
  5. Step 5: Solve for x
    x = 381,367,207,755.69/703,185.35
  6. Step 6: Final answer
    x = 542,342.37

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1.5x scale

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.