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Finding the Fourth Proportional to 490,738.66, 677,243.37 and 275,946.10

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Solution

The fourth proportional to 490,738.66, 677,243.37 and 275,946.10 is: 380,819.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,738.66 : 677,243.37 = 275,946.10 : x
  2. Step 2: Convert to fraction form
    490,738.66/677,243.37 = 275,946.10/x
  3. Step 3: Cross multiply
    490,738.66x = 677,243.37 × 275,946.10
  4. Step 4: Simplify right side
    490,738.66x = 186,882,666,702.36
  5. Step 5: Solve for x
    x = 186,882,666,702.36/490,738.66
  6. Step 6: Final answer
    x = 380,819.12

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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.