Home / 685,422.95-945,913.23-379,499.33

Finding the Fourth Proportional to 685,422.95, 945,913.23 and 379,499.33

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Solution

The fourth proportional to 685,422.95, 945,913.23 and 379,499.33 is: 523,725.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,422.95 : 945,913.23 = 379,499.33 : x
  2. Step 2: Convert to fraction form
    685,422.95/945,913.23 = 379,499.33/x
  3. Step 3: Cross multiply
    685,422.95x = 945,913.23 × 379,499.33
  4. Step 4: Simplify right side
    685,422.95x = 358,973,432,293.57
  5. Step 5: Solve for x
    x = 358,973,432,293.57/685,422.95
  6. Step 6: Final answer
    x = 523,725.43

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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.