Home / 685,416.84-945,865.46-379,463.88

Finding the Fourth Proportional to 685,416.84, 945,865.46 and 379,463.88

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Solution

The fourth proportional to 685,416.84, 945,865.46 and 379,463.88 is: 523,654.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,416.84 : 945,865.46 = 379,463.88 : x
  2. Step 2: Convert to fraction form
    685,416.84/945,865.46 = 379,463.88/x
  3. Step 3: Cross multiply
    685,416.84x = 945,865.46 × 379,463.88
  4. Step 4: Simplify right side
    685,416.84x = 358,921,777,409.59
  5. Step 5: Solve for x
    x = 358,921,777,409.59/685,416.84
  6. Step 6: Final answer
    x = 523,654.74

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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.