Home / 685,256.35-945,642.31-379,326.27

Finding the Fourth Proportional to 685,256.35, 945,642.31 and 379,326.27

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Solution

The fourth proportional to 685,256.35, 945,642.31 and 379,326.27 is: 523,463.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,256.35 : 945,642.31 = 379,326.27 : x
  2. Step 2: Convert to fraction form
    685,256.35/945,642.31 = 379,326.27/x
  3. Step 3: Cross multiply
    685,256.35x = 945,642.31 × 379,326.27
  4. Step 4: Simplify right side
    685,256.35x = 358,706,970,206.48
  5. Step 5: Solve for x
    x = 358,706,970,206.48/685,256.35
  6. Step 6: Final answer
    x = 523,463.91

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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.