Home / 1,328,972.60-1,993,654.52-430,115.60

Finding the Fourth Proportional to 1,328,972.60, 1,993,654.52 and 430,115.60

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Solution

The fourth proportional to 1,328,972.60, 1,993,654.52 and 430,115.60 is: 645,236.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,328,972.60 : 1,993,654.52 = 430,115.60 : x
  2. Step 2: Convert to fraction form
    1,328,972.60/1,993,654.52 = 430,115.60/x
  3. Step 3: Cross multiply
    1,328,972.60x = 1,993,654.52 × 430,115.60
  4. Step 4: Simplify right side
    1,328,972.60x = 857,501,910,062.51
  5. Step 5: Solve for x
    x = 857,501,910,062.51/1,328,972.60
  6. Step 6: Final answer
    x = 645,236.71

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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.