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Finding the Fourth Proportional to 620,795.84, 856,694.76 and 379,044.86

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Solution

The fourth proportional to 620,795.84, 856,694.76 and 379,044.86 is: 523,079.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,795.84 : 856,694.76 = 379,044.86 : x
  2. Step 2: Convert to fraction form
    620,795.84/856,694.76 = 379,044.86/x
  3. Step 3: Cross multiply
    620,795.84x = 856,694.76 × 379,044.86
  4. Step 4: Simplify right side
    620,795.84x = 324,725,745,366.93
  5. Step 5: Solve for x
    x = 324,725,745,366.93/620,795.84
  6. Step 6: Final answer
    x = 523,079.77

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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.