Home / 685,424.70-945,915.66-379,501.08

Finding the Fourth Proportional to 685,424.70, 945,915.66 and 379,501.08

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Solution

The fourth proportional to 685,424.70, 945,915.66 and 379,501.08 is: 523,727.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,424.70 : 945,915.66 = 379,501.08 : x
  2. Step 2: Convert to fraction form
    685,424.70/945,915.66 = 379,501.08/x
  3. Step 3: Cross multiply
    685,424.70x = 945,915.66 × 379,501.08
  4. Step 4: Simplify right side
    685,424.70x = 358,976,014,558.91
  5. Step 5: Solve for x
    x = 358,976,014,558.91/685,424.70
  6. Step 6: Final answer
    x = 523,727.86

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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.