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Finding the Fourth Proportional to 612,999.90, 845,922.69 and 341,053.74

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Solution

The fourth proportional to 612,999.90, 845,922.69 and 341,053.74 is: 470,644.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,999.90 : 845,922.69 = 341,053.74 : x
  2. Step 2: Convert to fraction form
    612,999.90/845,922.69 = 341,053.74/x
  3. Step 3: Cross multiply
    612,999.90x = 845,922.69 × 341,053.74
  4. Step 4: Simplify right side
    612,999.90x = 288,505,097,175.36
  5. Step 5: Solve for x
    x = 288,505,097,175.36/612,999.90
  6. Step 6: Final answer
    x = 470,644.61

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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.