Home / 1,308,639.28-1,962,959.20-410,080.80

Finding the Fourth Proportional to 1,308,639.28, 1,962,959.20 and 410,080.80

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Solution

The fourth proportional to 1,308,639.28, 1,962,959.20 and 410,080.80 is: 615,121.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,308,639.28 : 1,962,959.20 = 410,080.80 : x
  2. Step 2: Convert to fraction form
    1,308,639.28/1,962,959.20 = 410,080.80/x
  3. Step 3: Cross multiply
    1,308,639.28x = 1,962,959.20 × 410,080.80
  4. Step 4: Simplify right side
    1,308,639.28x = 804,971,879,103.36
  5. Step 5: Solve for x
    x = 804,971,879,103.36/1,308,639.28
  6. Step 6: Final answer
    x = 615,121.29

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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.