Home / 1,405,612,992.80-2,108,419,489.20-384,406,464.80

Finding the Fourth Proportional to 1,405,612,992.80, 2,108,419,489.20 and 384,406,464.80

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Solution

The fourth proportional to 1,405,612,992.80, 2,108,419,489.20 and 384,406,464.80 is: 576,609,697.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,405,612,992.80 : 2,108,419,489.20 = 384,406,464.80 : x
  2. Step 2: Convert to fraction form
    1,405,612,992.80/2,108,419,489.20 = 384,406,464.80/x
  3. Step 3: Cross multiply
    1,405,612,992.80x = 2,108,419,489.20 × 384,406,464.80
  4. Step 4: Simplify right side
    1,405,612,992.80x = 810,490,082,158,793,856
  5. Step 5: Solve for x
    x = 810,490,082,158,793,856/1,405,612,992.80
  6. Step 6: Final answer
    x = 576,609,697.20

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Double scale
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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.