Home / 721,288.42-1,082,031.05-300,465.88

Finding the Fourth Proportional to 721,288.42, 1,082,031.05 and 300,465.88

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Solution

The fourth proportional to 721,288.42, 1,082,031.05 and 300,465.88 is: 450,739.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,288.42 : 1,082,031.05 = 300,465.88 : x
  2. Step 2: Convert to fraction form
    721,288.42/1,082,031.05 = 300,465.88/x
  3. Step 3: Cross multiply
    721,288.42x = 1,082,031.05 × 300,465.88
  4. Step 4: Simplify right side
    721,288.42x = 325,113,406,966.58
  5. Step 5: Solve for x
    x = 325,113,406,966.58/721,288.42
  6. Step 6: Final answer
    x = 450,739.82

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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.