Home / 770,621.60-1,155,932.40-646,205.60

Finding the Fourth Proportional to 770,621.60, 1,155,932.40 and 646,205.60

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Solution

The fourth proportional to 770,621.60, 1,155,932.40 and 646,205.60 is: 969,308.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    770,621.60 : 1,155,932.40 = 646,205.60 : x
  2. Step 2: Convert to fraction form
    770,621.60/1,155,932.40 = 646,205.60/x
  3. Step 3: Cross multiply
    770,621.60x = 1,155,932.40 × 646,205.60
  4. Step 4: Simplify right side
    770,621.60x = 746,969,990,101.44
  5. Step 5: Solve for x
    x = 746,969,990,101.44/770,621.60
  6. Step 6: Final answer
    x = 969,308.40

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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.