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Finding the Fourth Proportional to 613,093.72, 845,590.04 and 398,302.98

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Solution

The fourth proportional to 613,093.72, 845,590.04 and 398,302.98 is: 549,346.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,093.72 : 845,590.04 = 398,302.98 : x
  2. Step 2: Convert to fraction form
    613,093.72/845,590.04 = 398,302.98/x
  3. Step 3: Cross multiply
    613,093.72x = 845,590.04 × 398,302.98
  4. Step 4: Simplify right side
    613,093.72x = 336,801,032,790.32
  5. Step 5: Solve for x
    x = 336,801,032,790.32/613,093.72
  6. Step 6: Final answer
    x = 549,346.73

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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.