Home / 685,152.83-945,486.78-379,229.81

Finding the Fourth Proportional to 685,152.83, 945,486.78 and 379,229.81

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Solution

The fourth proportional to 685,152.83, 945,486.78 and 379,229.81 is: 523,323.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,152.83 : 945,486.78 = 379,229.81 : x
  2. Step 2: Convert to fraction form
    685,152.83/945,486.78 = 379,229.81/x
  3. Step 3: Cross multiply
    685,152.83x = 945,486.78 × 379,229.81
  4. Step 4: Simplify right side
    685,152.83x = 358,556,767,209.48
  5. Step 5: Solve for x
    x = 358,556,767,209.48/685,152.83
  6. Step 6: Final answer
    x = 523,323.78

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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.