Home / 1,261,809.60-1,892,023.20-513,009.60

Finding the Fourth Proportional to 1,261,809.60, 1,892,023.20 and 513,009.60

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Solution

The fourth proportional to 1,261,809.60, 1,892,023.20 and 513,009.60 is: 769,233.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,261,809.60 : 1,892,023.20 = 513,009.60 : x
  2. Step 2: Convert to fraction form
    1,261,809.60/1,892,023.20 = 513,009.60/x
  3. Step 3: Cross multiply
    1,261,809.60x = 1,892,023.20 × 513,009.60
  4. Step 4: Simplify right side
    1,261,809.60x = 970,626,065,022.72
  5. Step 5: Solve for x
    x = 970,626,065,022.72/1,261,809.60
  6. Step 6: Final answer
    x = 769,233.38

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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.