Home / 685,424.95-945,915.99-379,501.33

Finding the Fourth Proportional to 685,424.95, 945,915.99 and 379,501.33

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Solution

The fourth proportional to 685,424.95, 945,915.99 and 379,501.33 is: 523,728.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,424.95 : 945,915.99 = 379,501.33 : x
  2. Step 2: Convert to fraction form
    685,424.95/945,915.99 = 379,501.33/x
  3. Step 3: Cross multiply
    685,424.95x = 945,915.99 × 379,501.33
  4. Step 4: Simplify right side
    685,424.95x = 358,976,376,273.27
  5. Step 5: Solve for x
    x = 358,976,376,273.27/685,424.95
  6. Step 6: Final answer
    x = 523,728.20

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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.