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Finding the Fourth Proportional to 613,091.73, 845,587.28 and 398,301

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Solution

The fourth proportional to 613,091.73, 845,587.28 and 398,301 is: 549,343.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,091.73 : 845,587.28 = 398,301 : x
  2. Step 2: Convert to fraction form
    613,091.73/845,587.28 = 398,301/x
  3. Step 3: Cross multiply
    613,091.73x = 845,587.28 × 398,301
  4. Step 4: Simplify right side
    613,091.73x = 336,798,259,211.28
  5. Step 5: Solve for x
    x = 336,798,259,211.28/613,091.73
  6. Step 6: Final answer
    x = 549,343.99

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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.