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Finding the Fourth Proportional to 612,987.54, 845,906.64 and 341,055.96

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Solution

The fourth proportional to 612,987.54, 845,906.64 and 341,055.96 is: 470,648.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,987.54 : 845,906.64 = 341,055.96 : x
  2. Step 2: Convert to fraction form
    612,987.54/845,906.64 = 341,055.96/x
  3. Step 3: Cross multiply
    612,987.54x = 845,906.64 × 341,055.96
  4. Step 4: Simplify right side
    612,987.54x = 288,501,501,175.57
  5. Step 5: Solve for x
    x = 288,501,501,175.57/612,987.54
  6. Step 6: Final answer
    x = 470,648.23

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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.