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Finding the Fourth Proportional to 1,664,961.88, 2,297,654.40 and 901,015.48

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Solution

The fourth proportional to 1,664,961.88, 2,297,654.40 and 901,015.48 is: 1,243,405.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,664,961.88 : 2,297,654.40 = 901,015.48 : x
  2. Step 2: Convert to fraction form
    1,664,961.88/2,297,654.40 = 901,015.48/x
  3. Step 3: Cross multiply
    1,664,961.88x = 2,297,654.40 × 901,015.48
  4. Step 4: Simplify right side
    1,664,961.88x = 2,070,222,182,090.11
  5. Step 5: Solve for x
    x = 2,070,222,182,090.11/1,664,961.88
  6. Step 6: Final answer
    x = 1,243,405.15

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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.