Home / 1,290,930.90-1,936,396.35-992,915.70

Finding the Fourth Proportional to 1,290,930.90, 1,936,396.35 and 992,915.70

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Solution

The fourth proportional to 1,290,930.90, 1,936,396.35 and 992,915.70 is: 1,489,373.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,930.90 : 1,936,396.35 = 992,915.70 : x
  2. Step 2: Convert to fraction form
    1,290,930.90/1,936,396.35 = 992,915.70/x
  3. Step 3: Cross multiply
    1,290,930.90x = 1,936,396.35 × 992,915.70
  4. Step 4: Simplify right side
    1,290,930.90x = 1,922,678,337,337.70
  5. Step 5: Solve for x
    x = 1,922,678,337,337.70/1,290,930.90
  6. Step 6: Final answer
    x = 1,489,373.55

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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.