Home / 1,189,422.90-1,641,361.93-645,547.79

Finding the Fourth Proportional to 1,189,422.90, 1,641,361.93 and 645,547.79

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Solution

The fourth proportional to 1,189,422.90, 1,641,361.93 and 645,547.79 is: 890,833.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,422.90 : 1,641,361.93 = 645,547.79 : x
  2. Step 2: Convert to fraction form
    1,189,422.90/1,641,361.93 = 645,547.79/x
  3. Step 3: Cross multiply
    1,189,422.90x = 1,641,361.93 × 645,547.79
  4. Step 4: Simplify right side
    1,189,422.90x = 1,059,577,568,991.17
  5. Step 5: Solve for x
    x = 1,059,577,568,991.17/1,189,422.90
  6. Step 6: Final answer
    x = 890,833.34

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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.