Home / 788,694.40-1,183,819.20-389,785.60

Finding the Fourth Proportional to 788,694.40, 1,183,819.20 and 389,785.60

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Solution

The fourth proportional to 788,694.40, 1,183,819.20 and 389,785.60 is: 585,062.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    788,694.40 : 1,183,819.20 = 389,785.60 : x
  2. Step 2: Convert to fraction form
    788,694.40/1,183,819.20 = 389,785.60/x
  3. Step 3: Cross multiply
    788,694.40x = 1,183,819.20 × 389,785.60
  4. Step 4: Simplify right side
    788,694.40x = 461,435,677,163.52
  5. Step 5: Solve for x
    x = 461,435,677,163.52/788,694.40
  6. Step 6: Final answer
    x = 585,062.70

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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.