Home / 505,969.20-759,828.60-490,222.80

Finding the Fourth Proportional to 505,969.20, 759,828.60 and 490,222.80

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Solution

The fourth proportional to 505,969.20, 759,828.60 and 490,222.80 is: 736,181.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,969.20 : 759,828.60 = 490,222.80 : x
  2. Step 2: Convert to fraction form
    505,969.20/759,828.60 = 490,222.80/x
  3. Step 3: Cross multiply
    505,969.20x = 759,828.60 × 490,222.80
  4. Step 4: Simplify right side
    505,969.20x = 372,485,303,812.08
  5. Step 5: Solve for x
    x = 372,485,303,812.08/505,969.20
  6. Step 6: Final answer
    x = 736,181.78

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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.