Home / 1,555,787.28-2,146,986.48-840,395.28

Finding the Fourth Proportional to 1,555,787.28, 2,146,986.48 and 840,395.28

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Solution

The fourth proportional to 1,555,787.28, 2,146,986.48 and 840,395.28 is: 1,159,745.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,555,787.28 : 2,146,986.48 = 840,395.28 : x
  2. Step 2: Convert to fraction form
    1,555,787.28/2,146,986.48 = 840,395.28/x
  3. Step 3: Cross multiply
    1,555,787.28x = 2,146,986.48 × 840,395.28
  4. Step 4: Simplify right side
    1,555,787.28x = 1,804,317,304,015.81
  5. Step 5: Solve for x
    x = 1,804,317,304,015.81/1,555,787.28
  6. Step 6: Final answer
    x = 1,159,745.50

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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.