Home / 1,336,405.60-2,005,067.40-389,915.20

Finding the Fourth Proportional to 1,336,405.60, 2,005,067.40 and 389,915.20

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Solution

The fourth proportional to 1,336,405.60, 2,005,067.40 and 389,915.20 is: 585,006.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,336,405.60 : 2,005,067.40 = 389,915.20 : x
  2. Step 2: Convert to fraction form
    1,336,405.60/2,005,067.40 = 389,915.20/x
  3. Step 3: Cross multiply
    1,336,405.60x = 2,005,067.40 × 389,915.20
  4. Step 4: Simplify right side
    1,336,405.60x = 781,806,256,284.48
  5. Step 5: Solve for x
    x = 781,806,256,284.48/1,336,405.60
  6. Step 6: Final answer
    x = 585,006.72

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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.