Home / 872,485.20-1,308,814.20-303,778.80

Finding the Fourth Proportional to 872,485.20, 1,308,814.20 and 303,778.80

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Solution

The fourth proportional to 872,485.20, 1,308,814.20 and 303,778.80 is: 455,698.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    872,485.20 : 1,308,814.20 = 303,778.80 : x
  2. Step 2: Convert to fraction form
    872,485.20/1,308,814.20 = 303,778.80/x
  3. Step 3: Cross multiply
    872,485.20x = 1,308,814.20 × 303,778.80
  4. Step 4: Simplify right side
    872,485.20x = 397,590,007,098.96
  5. Step 5: Solve for x
    x = 397,590,007,098.96/872,485.20
  6. Step 6: Final answer
    x = 455,698.28

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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.