Home / 1,388,364.40-2,083,237.80-789,785.20

Finding the Fourth Proportional to 1,388,364.40, 2,083,237.80 and 789,785.20

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Solution

The fourth proportional to 1,388,364.40, 2,083,237.80 and 789,785.20 is: 1,185,071.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,388,364.40 : 2,083,237.80 = 789,785.20 : x
  2. Step 2: Convert to fraction form
    1,388,364.40/2,083,237.80 = 789,785.20/x
  3. Step 3: Cross multiply
    1,388,364.40x = 2,083,237.80 × 789,785.20
  4. Step 4: Simplify right side
    1,388,364.40x = 1,645,310,382,520.56
  5. Step 5: Solve for x
    x = 1,645,310,382,520.56/1,388,364.40
  6. Step 6: Final answer
    x = 1,185,071.00

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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.