Home / 646,768,618.45-969,798,633.67-318,522,313.33

Finding the Fourth Proportional to 646,768,618.45, 969,798,633.67 and 318,522,313.33

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Solution

The fourth proportional to 646,768,618.45, 969,798,633.67 and 318,522,313.33 is: 477,608,986.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,768,618.45 : 969,798,633.67 = 318,522,313.33 : x
  2. Step 2: Convert to fraction form
    646,768,618.45/969,798,633.67 = 318,522,313.33/x
  3. Step 3: Cross multiply
    646,768,618.45x = 969,798,633.67 × 318,522,313.33
  4. Step 4: Simplify right side
    646,768,618.45x = 308,902,504,260,841,600
  5. Step 5: Solve for x
    x = 308,902,504,260,841,600/646,768,618.45
  6. Step 6: Final answer
    x = 477,608,986.35

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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.