Home / 721,288.17-1,082,030.68-300,465.63

Finding the Fourth Proportional to 721,288.17, 1,082,030.68 and 300,465.63

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Solution

The fourth proportional to 721,288.17, 1,082,030.68 and 300,465.63 is: 450,739.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,288.17 : 1,082,030.68 = 300,465.63 : x
  2. Step 2: Convert to fraction form
    721,288.17/1,082,030.68 = 300,465.63/x
  3. Step 3: Cross multiply
    721,288.17x = 1,082,030.68 × 300,465.63
  4. Step 4: Simplify right side
    721,288.17x = 325,113,023,784.21
  5. Step 5: Solve for x
    x = 325,113,023,784.21/721,288.17
  6. Step 6: Final answer
    x = 450,739.44

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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.