Home / 1,319,136.30-1,978,704.45-321,864.30

Finding the Fourth Proportional to 1,319,136.30, 1,978,704.45 and 321,864.30

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Solution

The fourth proportional to 1,319,136.30, 1,978,704.45 and 321,864.30 is: 482,796.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,319,136.30 : 1,978,704.45 = 321,864.30 : x
  2. Step 2: Convert to fraction form
    1,319,136.30/1,978,704.45 = 321,864.30/x
  3. Step 3: Cross multiply
    1,319,136.30x = 1,978,704.45 × 321,864.30
  4. Step 4: Simplify right side
    1,319,136.30x = 636,874,322,706.14
  5. Step 5: Solve for x
    x = 636,874,322,706.14/1,319,136.30
  6. Step 6: Final answer
    x = 482,796.45

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Similar ratio
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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.