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Finding the Fourth Proportional to 685,073.54, 945,394.52 and 379,150.51

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Solution

The fourth proportional to 685,073.54, 945,394.52 and 379,150.51 is: 523,223.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,073.54 : 945,394.52 = 379,150.51 : x
  2. Step 2: Convert to fraction form
    685,073.54/945,394.52 = 379,150.51/x
  3. Step 3: Cross multiply
    685,073.54x = 945,394.52 × 379,150.51
  4. Step 4: Simplify right side
    685,073.54x = 358,446,814,409.21
  5. Step 5: Solve for x
    x = 358,446,814,409.21/685,073.54
  6. Step 6: Final answer
    x = 523,223.85

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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.