Home / 446,561.20-669,949.80-131,028.40

Finding the Fourth Proportional to 446,561.20, 669,949.80 and 131,028.40

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Solution

The fourth proportional to 446,561.20, 669,949.80 and 131,028.40 is: 196,574.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    446,561.20 : 669,949.80 = 131,028.40 : x
  2. Step 2: Convert to fraction form
    446,561.20/669,949.80 = 131,028.40/x
  3. Step 3: Cross multiply
    446,561.20x = 669,949.80 × 131,028.40
  4. Step 4: Simplify right side
    446,561.20x = 87,782,450,374.32
  5. Step 5: Solve for x
    x = 87,782,450,374.32/446,561.20
  6. Step 6: Final answer
    x = 196,574.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.