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Finding the Fourth Proportional to 703,189.86, 970,332.48 and 393,034.38

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Solution

The fourth proportional to 703,189.86, 970,332.48 and 393,034.38 is: 542,348.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    703,189.86 : 970,332.48 = 393,034.38 : x
  2. Step 2: Convert to fraction form
    703,189.86/970,332.48 = 393,034.38/x
  3. Step 3: Cross multiply
    703,189.86x = 970,332.48 × 393,034.38
  4. Step 4: Simplify right side
    703,189.86x = 381,374,024,670.66
  5. Step 5: Solve for x
    x = 381,374,024,670.66/703,189.86
  6. Step 6: Final answer
    x = 542,348.58

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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.