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Finding the Fourth Proportional to 667,256.97, 920,880.48 and 380,819.91

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Solution

The fourth proportional to 667,256.97, 920,880.48 and 380,819.91 is: 525,569.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,256.97 : 920,880.48 = 380,819.91 : x
  2. Step 2: Convert to fraction form
    667,256.97/920,880.48 = 380,819.91/x
  3. Step 3: Cross multiply
    667,256.97x = 920,880.48 × 380,819.91
  4. Step 4: Simplify right side
    667,256.97x = 350,689,621,514.36
  5. Step 5: Solve for x
    x = 350,689,621,514.36/667,256.97
  6. Step 6: Final answer
    x = 525,569.06

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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.