Home / 860,017.20-1,290,033.62-260,978.38

Finding the Fourth Proportional to 860,017.20, 1,290,033.62 and 260,978.38

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Solution

The fourth proportional to 860,017.20, 1,290,033.62 and 260,978.38 is: 391,469.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,017.20 : 1,290,033.62 = 260,978.38 : x
  2. Step 2: Convert to fraction form
    860,017.20/1,290,033.62 = 260,978.38/x
  3. Step 3: Cross multiply
    860,017.20x = 1,290,033.62 × 260,978.38
  4. Step 4: Simplify right side
    860,017.20x = 336,670,884,293.14
  5. Step 5: Solve for x
    x = 336,670,884,293.14/860,017.20
  6. Step 6: Final answer
    x = 391,469.94

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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.