Home / 685,968,012.76-1,028,431,338.16-353,616,883.60

Finding the Fourth Proportional to 685,968,012.76, 1,028,431,338.16 and 353,616,883.60

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Solution

The fourth proportional to 685,968,012.76, 1,028,431,338.16 and 353,616,883.60 is: 530,156,914.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,968,012.76 : 1,028,431,338.16 = 353,616,883.60 : x
  2. Step 2: Convert to fraction form
    685,968,012.76/1,028,431,338.16 = 353,616,883.60/x
  3. Step 3: Cross multiply
    685,968,012.76x = 1,028,431,338.16 × 353,616,883.60
  4. Step 4: Simplify right side
    685,968,012.76x = 363,670,684,796,716,992
  5. Step 5: Solve for x
    x = 363,670,684,796,716,992/685,968,012.76
  6. Step 6: Final answer
    x = 530,156,914.07

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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.