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Finding the Fourth Proportional to 446,578.80, 669,868.20 and 412,364.40

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Solution

The fourth proportional to 446,578.80, 669,868.20 and 412,364.40 is: 618,546.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    446,578.80 : 669,868.20 = 412,364.40 : x
  2. Step 2: Convert to fraction form
    446,578.80/669,868.20 = 412,364.40/x
  3. Step 3: Cross multiply
    446,578.80x = 669,868.20 × 412,364.40
  4. Step 4: Simplify right side
    446,578.80x = 276,229,798,372.08
  5. Step 5: Solve for x
    x = 276,229,798,372.08/446,578.80
  6. Step 6: Final answer
    x = 618,546.60

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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.