Home / 685,262.09-945,647.80-379,338.66

Finding the Fourth Proportional to 685,262.09, 945,647.80 and 379,338.66

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Solution

The fourth proportional to 685,262.09, 945,647.80 and 379,338.66 is: 523,479.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,262.09 : 945,647.80 = 379,338.66 : x
  2. Step 2: Convert to fraction form
    685,262.09/945,647.80 = 379,338.66/x
  3. Step 3: Cross multiply
    685,262.09x = 945,647.80 × 379,338.66
  4. Step 4: Simplify right side
    685,262.09x = 358,720,768,335.60
  5. Step 5: Solve for x
    x = 358,720,768,335.60/685,262.09
  6. Step 6: Final answer
    x = 523,479.66

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.