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Finding the Fourth Proportional to 613,019.75, 845,840.48 and 358,321.73

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Solution

The fourth proportional to 613,019.75, 845,840.48 and 358,321.73 is: 494,409.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,019.75 : 845,840.48 = 358,321.73 : x
  2. Step 2: Convert to fraction form
    613,019.75/845,840.48 = 358,321.73/x
  3. Step 3: Cross multiply
    613,019.75x = 845,840.48 × 358,321.73
  4. Step 4: Simplify right side
    613,019.75x = 303,083,018,076.82
  5. Step 5: Solve for x
    x = 303,083,018,076.82/613,019.75
  6. Step 6: Final answer
    x = 494,409.88

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1.5x scale

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.