Home / 1,326,856.80-1,990,285.20-329,584.80

Finding the Fourth Proportional to 1,326,856.80, 1,990,285.20 and 329,584.80

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Solution

The fourth proportional to 1,326,856.80, 1,990,285.20 and 329,584.80 is: 494,377.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,326,856.80 : 1,990,285.20 = 329,584.80 : x
  2. Step 2: Convert to fraction form
    1,326,856.80/1,990,285.20 = 329,584.80/x
  3. Step 3: Cross multiply
    1,326,856.80x = 1,990,285.20 × 329,584.80
  4. Step 4: Simplify right side
    1,326,856.80x = 655,967,749,584.96
  5. Step 5: Solve for x
    x = 655,967,749,584.96/1,326,856.80
  6. Step 6: Final answer
    x = 494,377.20

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Double scale
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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.