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Finding the Fourth Proportional to 685,073.53, 945,394.50 and 379,150.50

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Solution

The fourth proportional to 685,073.53, 945,394.50 and 379,150.50 is: 523,223.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,073.53 : 945,394.50 = 379,150.50 : x
  2. Step 2: Convert to fraction form
    685,073.53/945,394.50 = 379,150.50/x
  3. Step 3: Cross multiply
    685,073.53x = 945,394.50 × 379,150.50
  4. Step 4: Simplify right side
    685,073.53x = 358,446,794,888.73
  5. Step 5: Solve for x
    x = 358,446,794,888.73/685,073.53
  6. Step 6: Final answer
    x = 523,223.83

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1.5x scale

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.