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Finding the Fourth Proportional to 613,297.82, 845,992.26 and 398,580.89

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Solution

The fourth proportional to 613,297.82, 845,992.26 and 398,580.89 is: 549,808.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,297.82 : 845,992.26 = 398,580.89 : x
  2. Step 2: Convert to fraction form
    613,297.82/845,992.26 = 398,580.89/x
  3. Step 3: Cross multiply
    613,297.82x = 845,992.26 × 398,580.89
  4. Step 4: Simplify right side
    613,297.82x = 337,196,347,923.91
  5. Step 5: Solve for x
    x = 337,196,347,923.91/613,297.82
  6. Step 6: Final answer
    x = 549,808.49

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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.