Home / 1,189,231.62-1,641,143.93-645,367.24

Finding the Fourth Proportional to 1,189,231.62, 1,641,143.93 and 645,367.24

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Solution

The fourth proportional to 1,189,231.62, 1,641,143.93 and 645,367.24 is: 890,609.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,231.62 : 1,641,143.93 = 645,367.24 : x
  2. Step 2: Convert to fraction form
    1,189,231.62/1,641,143.93 = 645,367.24/x
  3. Step 3: Cross multiply
    1,189,231.62x = 1,641,143.93 × 645,367.24
  4. Step 4: Simplify right side
    1,189,231.62x = 1,059,140,532,649.71
  5. Step 5: Solve for x
    x = 1,059,140,532,649.71/1,189,231.62
  6. Step 6: Final answer
    x = 890,609.13

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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.