Home / 1,326,422.80-1,990,411.80-485,059.60

Finding the Fourth Proportional to 1,326,422.80, 1,990,411.80 and 485,059.60

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Solution

The fourth proportional to 1,326,422.80, 1,990,411.80 and 485,059.60 is: 727,873.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,326,422.80 : 1,990,411.80 = 485,059.60 : x
  2. Step 2: Convert to fraction form
    1,326,422.80/1,990,411.80 = 485,059.60/x
  3. Step 3: Cross multiply
    1,326,422.80x = 1,990,411.80 × 485,059.60
  4. Step 4: Simplify right side
    1,326,422.80x = 965,468,351,543.28
  5. Step 5: Solve for x
    x = 965,468,351,543.28/1,326,422.80
  6. Step 6: Final answer
    x = 727,873.76

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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.