Home / 1,147,101.40-1,720,881.78-642,380.14

Finding the Fourth Proportional to 1,147,101.40, 1,720,881.78 and 642,380.14

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Solution

The fourth proportional to 1,147,101.40, 1,720,881.78 and 642,380.14 is: 963,698.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,147,101.40 : 1,720,881.78 = 642,380.14 : x
  2. Step 2: Convert to fraction form
    1,147,101.40/1,720,881.78 = 642,380.14/x
  3. Step 3: Cross multiply
    1,147,101.40x = 1,720,881.78 × 642,380.14
  4. Step 4: Simplify right side
    1,147,101.40x = 1,105,460,278,759.85
  5. Step 5: Solve for x
    x = 1,105,460,278,759.85/1,147,101.40
  6. Step 6: Final answer
    x = 963,698.83

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.