Home / 1,189,422.89-1,641,361.84-645,547.73

Finding the Fourth Proportional to 1,189,422.89, 1,641,361.84 and 645,547.73

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Solution

The fourth proportional to 1,189,422.89, 1,641,361.84 and 645,547.73 is: 890,833.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,422.89 : 1,641,361.84 = 645,547.73 : x
  2. Step 2: Convert to fraction form
    1,189,422.89/1,641,361.84 = 645,547.73/x
  3. Step 3: Cross multiply
    1,189,422.89x = 1,641,361.84 × 645,547.73
  4. Step 4: Simplify right side
    1,189,422.89x = 1,059,577,409,920.62
  5. Step 5: Solve for x
    x = 1,059,577,409,920.62/1,189,422.89
  6. Step 6: Final answer
    x = 890,833.21

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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.