Home / 1,285,911.40-1,928,867.10-432,911.74

Finding the Fourth Proportional to 1,285,911.40, 1,928,867.10 and 432,911.74

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Solution

The fourth proportional to 1,285,911.40, 1,928,867.10 and 432,911.74 is: 649,367.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,285,911.40 : 1,928,867.10 = 432,911.74 : x
  2. Step 2: Convert to fraction form
    1,285,911.40/1,928,867.10 = 432,911.74/x
  3. Step 3: Cross multiply
    1,285,911.40x = 1,928,867.10 × 432,911.74
  4. Step 4: Simplify right side
    1,285,911.40x = 835,029,212,489.75
  5. Step 5: Solve for x
    x = 835,029,212,489.75/1,285,911.40
  6. Step 6: Final answer
    x = 649,367.61

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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.