Home / 721,308.29-1,082,060.90-300,485.75

Finding the Fourth Proportional to 721,308.29, 1,082,060.90 and 300,485.75

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Solution

The fourth proportional to 721,308.29, 1,082,060.90 and 300,485.75 is: 450,769.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,308.29 : 1,082,060.90 = 300,485.75 : x
  2. Step 2: Convert to fraction form
    721,308.29/1,082,060.90 = 300,485.75/x
  3. Step 3: Cross multiply
    721,308.29x = 1,082,060.90 × 300,485.75
  4. Step 4: Simplify right side
    721,308.29x = 325,143,879,579.75
  5. Step 5: Solve for x
    x = 325,143,879,579.75/721,308.29
  6. Step 6: Final answer
    x = 450,769.64

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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.