Home / 685,426.08-945,917.55-379,502.45

Finding the Fourth Proportional to 685,426.08, 945,917.55 and 379,502.45

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Solution

The fourth proportional to 685,426.08, 945,917.55 and 379,502.45 is: 523,729.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,426.08 : 945,917.55 = 379,502.45 : x
  2. Step 2: Convert to fraction form
    685,426.08/945,917.55 = 379,502.45/x
  3. Step 3: Cross multiply
    685,426.08x = 945,917.55 × 379,502.45
  4. Step 4: Simplify right side
    685,426.08x = 358,978,026,540.60
  5. Step 5: Solve for x
    x = 358,978,026,540.60/685,426.08
  6. Step 6: Final answer
    x = 523,729.74

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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.