Home / 446,972.12-670,015.32-209,890.40

Finding the Fourth Proportional to 446,972.12, 670,015.32 and 209,890.40

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Solution

The fourth proportional to 446,972.12, 670,015.32 and 209,890.40 is: 314,627.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    446,972.12 : 670,015.32 = 209,890.40 : x
  2. Step 2: Convert to fraction form
    446,972.12/670,015.32 = 209,890.40/x
  3. Step 3: Cross multiply
    446,972.12x = 670,015.32 × 209,890.40
  4. Step 4: Simplify right side
    446,972.12x = 140,629,783,520.93
  5. Step 5: Solve for x
    x = 140,629,783,520.93/446,972.12
  6. Step 6: Final answer
    x = 314,627.64

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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.