Home / 1,490,787.75-2,057,287.11-811,724.25

Finding the Fourth Proportional to 1,490,787.75, 2,057,287.11 and 811,724.25

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Solution

The fourth proportional to 1,490,787.75, 2,057,287.11 and 811,724.25 is: 1,120,179.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,490,787.75 : 2,057,287.11 = 811,724.25 : x
  2. Step 2: Convert to fraction form
    1,490,787.75/2,057,287.11 = 811,724.25/x
  3. Step 3: Cross multiply
    1,490,787.75x = 2,057,287.11 × 811,724.25
  4. Step 4: Simplify right side
    1,490,787.75x = 1,669,949,836,399.42
  5. Step 5: Solve for x
    x = 1,669,949,836,399.42/1,490,787.75
  6. Step 6: Final answer
    x = 1,120,179.47

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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.