Home / 1,205,817.31-1,664,043.78-661,873.96

Finding the Fourth Proportional to 1,205,817.31, 1,664,043.78 and 661,873.96

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Solution

The fourth proportional to 1,205,817.31, 1,664,043.78 and 661,873.96 is: 913,394.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,205,817.31 : 1,664,043.78 = 661,873.96 : x
  2. Step 2: Convert to fraction form
    1,205,817.31/1,664,043.78 = 661,873.96/x
  3. Step 3: Cross multiply
    1,205,817.31x = 1,664,043.78 × 661,873.96
  4. Step 4: Simplify right side
    1,205,817.31x = 1,101,387,246,281.97
  5. Step 5: Solve for x
    x = 1,101,387,246,281.97/1,205,817.31
  6. Step 6: Final answer
    x = 913,394.79

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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.