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Finding the Fourth Proportional to 680,650.52, 939,280.56 and 374,723.86

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Solution

The fourth proportional to 680,650.52, 939,280.56 and 374,723.86 is: 517,109.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,650.52 : 939,280.56 = 374,723.86 : x
  2. Step 2: Convert to fraction form
    680,650.52/939,280.56 = 374,723.86/x
  3. Step 3: Cross multiply
    680,650.52x = 939,280.56 × 374,723.86
  4. Step 4: Simplify right side
    680,650.52x = 351,970,837,066.16
  5. Step 5: Solve for x
    x = 351,970,837,066.16/680,650.52
  6. Step 6: Final answer
    x = 517,109.48

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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.