Home / 1,099,680.80-1,649,812.80-389,634.80

Finding the Fourth Proportional to 1,099,680.80, 1,649,812.80 and 389,634.80

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Solution

The fourth proportional to 1,099,680.80, 1,649,812.80 and 389,634.80 is: 584,555.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,099,680.80 : 1,649,812.80 = 389,634.80 : x
  2. Step 2: Convert to fraction form
    1,099,680.80/1,649,812.80 = 389,634.80/x
  3. Step 3: Cross multiply
    1,099,680.80x = 1,649,812.80 × 389,634.80
  4. Step 4: Simplify right side
    1,099,680.80x = 642,824,480,365.44
  5. Step 5: Solve for x
    x = 642,824,480,365.44/1,099,680.80
  6. Step 6: Final answer
    x = 584,555.52

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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.