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Finding the Fourth Proportional to 1,984,829.70, 2,977,422.15 and 770,377.85

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Solution

The fourth proportional to 1,984,829.70, 2,977,422.15 and 770,377.85 is: 1,155,635.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,984,829.70 : 2,977,422.15 = 770,377.85 : x
  2. Step 2: Convert to fraction form
    1,984,829.70/2,977,422.15 = 770,377.85/x
  3. Step 3: Cross multiply
    1,984,829.70x = 2,977,422.15 × 770,377.85
  4. Step 4: Simplify right side
    1,984,829.70x = 2,293,740,081,902.93
  5. Step 5: Solve for x
    x = 2,293,740,081,902.93/1,984,829.70
  6. Step 6: Final answer
    x = 1,155,635.71

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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.