Home / 1,340,787.12-1,850,176.80-789,415.80

Finding the Fourth Proportional to 1,340,787.12, 1,850,176.80 and 789,415.80

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Solution

The fourth proportional to 1,340,787.12, 1,850,176.80 and 789,415.80 is: 1,089,329.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,340,787.12 : 1,850,176.80 = 789,415.80 : x
  2. Step 2: Convert to fraction form
    1,340,787.12/1,850,176.80 = 789,415.80/x
  3. Step 3: Cross multiply
    1,340,787.12x = 1,850,176.80 × 789,415.80
  4. Step 4: Simplify right side
    1,340,787.12x = 1,460,558,798,713.44
  5. Step 5: Solve for x
    x = 1,460,558,798,713.44/1,340,787.12
  6. Step 6: Final answer
    x = 1,089,329.38

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1.5x scale

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.