Home / 1,112,821.43-1,668,360.12-439,406.79

Finding the Fourth Proportional to 1,112,821.43, 1,668,360.12 and 439,406.79

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Solution

The fourth proportional to 1,112,821.43, 1,668,360.12 and 439,406.79 is: 658,765.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,112,821.43 : 1,668,360.12 = 439,406.79 : x
  2. Step 2: Convert to fraction form
    1,112,821.43/1,668,360.12 = 439,406.79/x
  3. Step 3: Cross multiply
    1,112,821.43x = 1,668,360.12 × 439,406.79
  4. Step 4: Simplify right side
    1,112,821.43x = 733,088,756,989.09
  5. Step 5: Solve for x
    x = 733,088,756,989.09/1,112,821.43
  6. Step 6: Final answer
    x = 658,765.85

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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.