Home / 721,287.92-1,082,030.30-300,465.38

Finding the Fourth Proportional to 721,287.92, 1,082,030.30 and 300,465.38

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Solution

The fourth proportional to 721,287.92, 1,082,030.30 and 300,465.38 is: 450,739.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,287.92 : 1,082,030.30 = 300,465.38 : x
  2. Step 2: Convert to fraction form
    721,287.92/1,082,030.30 = 300,465.38/x
  3. Step 3: Cross multiply
    721,287.92x = 1,082,030.30 × 300,465.38
  4. Step 4: Simplify right side
    721,287.92x = 325,112,640,602.03
  5. Step 5: Solve for x
    x = 325,112,640,602.03/721,287.92
  6. Step 6: Final answer
    x = 450,739.07

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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.