Home / 1,325,318.80-1,987,978.20-328,046.80

Finding the Fourth Proportional to 1,325,318.80, 1,987,978.20 and 328,046.80

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Solution

The fourth proportional to 1,325,318.80, 1,987,978.20 and 328,046.80 is: 492,070.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,325,318.80 : 1,987,978.20 = 328,046.80 : x
  2. Step 2: Convert to fraction form
    1,325,318.80/1,987,978.20 = 328,046.80/x
  3. Step 3: Cross multiply
    1,325,318.80x = 1,987,978.20 × 328,046.80
  4. Step 4: Simplify right side
    1,325,318.80x = 652,149,886,979.76
  5. Step 5: Solve for x
    x = 652,149,886,979.76/1,325,318.80
  6. Step 6: Final answer
    x = 492,070.20

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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.