Home / 1,338,721.60-2,009,637.60-806,843.20

Finding the Fourth Proportional to 1,338,721.60, 2,009,637.60 and 806,843.20

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Solution

The fourth proportional to 1,338,721.60, 2,009,637.60 and 806,843.20 is: 1,211,202.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,338,721.60 : 2,009,637.60 = 806,843.20 : x
  2. Step 2: Convert to fraction form
    1,338,721.60/2,009,637.60 = 806,843.20/x
  3. Step 3: Cross multiply
    1,338,721.60x = 2,009,637.60 × 806,843.20
  4. Step 4: Simplify right side
    1,338,721.60x = 1,621,462,432,024.32
  5. Step 5: Solve for x
    x = 1,621,462,432,024.32/1,338,721.60
  6. Step 6: Final answer
    x = 1,211,202.11

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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.