Home / 612,993.45-845,917.70-354,881.33

Finding the Fourth Proportional to 612,993.45, 845,917.70 and 354,881.33

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Solution

The fourth proportional to 612,993.45, 845,917.70 and 354,881.33 is: 489,728.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,993.45 : 845,917.70 = 354,881.33 : x
  2. Step 2: Convert to fraction form
    612,993.45/845,917.70 = 354,881.33/x
  3. Step 3: Cross multiply
    612,993.45x = 845,917.70 × 354,881.33
  4. Step 4: Simplify right side
    612,993.45x = 300,200,398,446.54
  5. Step 5: Solve for x
    x = 300,200,398,446.54/612,993.45
  6. Step 6: Final answer
    x = 489,728.56

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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.