Home / 990,721,668.42-1,486,082,765.04-291,213,833.22

Finding the Fourth Proportional to 990,721,668.42, 1,486,082,765.04 and 291,213,833.22

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Solution

The fourth proportional to 990,721,668.42, 1,486,082,765.04 and 291,213,833.22 is: 436,820,826.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,721,668.42 : 1,486,082,765.04 = 291,213,833.22 : x
  2. Step 2: Convert to fraction form
    990,721,668.42/1,486,082,765.04 = 291,213,833.22/x
  3. Step 3: Cross multiply
    990,721,668.42x = 1,486,082,765.04 × 291,213,833.22
  4. Step 4: Simplify right side
    990,721,668.42x = 432,767,858,489,475,008
  5. Step 5: Solve for x
    x = 432,767,858,489,475,008/990,721,668.42
  6. Step 6: Final answer
    x = 436,820,826.96

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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.