Home / 1,225,745.28-1,838,162.88-426,821.76

Finding the Fourth Proportional to 1,225,745.28, 1,838,162.88 and 426,821.76

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Solution

The fourth proportional to 1,225,745.28, 1,838,162.88 and 426,821.76 is: 640,074.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,225,745.28 : 1,838,162.88 = 426,821.76 : x
  2. Step 2: Convert to fraction form
    1,225,745.28/1,838,162.88 = 426,821.76/x
  3. Step 3: Cross multiply
    1,225,745.28x = 1,838,162.88 × 426,821.76
  4. Step 4: Simplify right side
    1,225,745.28x = 784,567,915,608.27
  5. Step 5: Solve for x
    x = 784,567,915,608.27/1,225,745.28
  6. Step 6: Final answer
    x = 640,074.19

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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.