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Finding the Fourth Proportional to 612,796.80, 918,101.70 and 296,556.60

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Solution

The fourth proportional to 612,796.80, 918,101.70 and 296,556.60 is: 444,305.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,796.80 : 918,101.70 = 296,556.60 : x
  2. Step 2: Convert to fraction form
    612,796.80/918,101.70 = 296,556.60/x
  3. Step 3: Cross multiply
    612,796.80x = 918,101.70 × 296,556.60
  4. Step 4: Simplify right side
    612,796.80x = 272,269,118,606.22
  5. Step 5: Solve for x
    x = 272,269,118,606.22/612,796.80
  6. Step 6: Final answer
    x = 444,305.71

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.