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Finding the Fourth Proportional to 685,792.34, 946,383.42 and 379,867.71

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Solution

The fourth proportional to 685,792.34, 946,383.42 and 379,867.71 is: 524,211.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,792.34 : 946,383.42 = 379,867.71 : x
  2. Step 2: Convert to fraction form
    685,792.34/946,383.42 = 379,867.71/x
  3. Step 3: Cross multiply
    685,792.34x = 946,383.42 × 379,867.71
  4. Step 4: Simplify right side
    685,792.34x = 359,500,502,537.37
  5. Step 5: Solve for x
    x = 359,500,502,537.37/685,792.34
  6. Step 6: Final answer
    x = 524,211.90

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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.