Home / 685,043.41-945,361.64-379,140.83

Finding the Fourth Proportional to 685,043.41, 945,361.64 and 379,140.83

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Solution

The fourth proportional to 685,043.41, 945,361.64 and 379,140.83 is: 523,215.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,043.41 : 945,361.64 = 379,140.83 : x
  2. Step 2: Convert to fraction form
    685,043.41/945,361.64 = 379,140.83/x
  3. Step 3: Cross multiply
    685,043.41x = 945,361.64 × 379,140.83
  4. Step 4: Simplify right side
    685,043.41x = 358,425,200,151.02
  5. Step 5: Solve for x
    x = 358,425,200,151.02/685,043.41
  6. Step 6: Final answer
    x = 523,215.31

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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.