Home / 685,968,021.76-1,028,431,351.68-353,616,892.60

Finding the Fourth Proportional to 685,968,021.76, 1,028,431,351.68 and 353,616,892.60

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Solution

The fourth proportional to 685,968,021.76, 1,028,431,351.68 and 353,616,892.60 is: 530,156,927.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,968,021.76 : 1,028,431,351.68 = 353,616,892.60 : x
  2. Step 2: Convert to fraction form
    685,968,021.76/1,028,431,351.68 = 353,616,892.60/x
  3. Step 3: Cross multiply
    685,968,021.76x = 1,028,431,351.68 × 353,616,892.60
  4. Step 4: Simplify right side
    685,968,021.76x = 363,670,698,833,499,392
  5. Step 5: Solve for x
    x = 363,670,698,833,499,392/685,968,021.76
  6. Step 6: Final answer
    x = 530,156,927.58

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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.