Home / 1,189,409.43-1,641,386.58-645,545.21

Finding the Fourth Proportional to 1,189,409.43, 1,641,386.58 and 645,545.21

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Solution

The fourth proportional to 1,189,409.43, 1,641,386.58 and 645,545.21 is: 890,853.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,409.43 : 1,641,386.58 = 645,545.21 : x
  2. Step 2: Convert to fraction form
    1,189,409.43/1,641,386.58 = 645,545.21/x
  3. Step 3: Cross multiply
    1,189,409.43x = 1,641,386.58 × 645,545.21
  4. Step 4: Simplify right side
    1,189,409.43x = 1,059,589,236,270.35
  5. Step 5: Solve for x
    x = 1,059,589,236,270.35/1,189,409.43
  6. Step 6: Final answer
    x = 890,853.23

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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.