Home / 815,294,522.96-1,222,062,081.48-400,288,703.12

Finding the Fourth Proportional to 815,294,522.96, 1,222,062,081.48 and 400,288,703.12

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Solution

The fourth proportional to 815,294,522.96, 1,222,062,081.48 and 400,288,703.12 is: 600,001,143.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,294,522.96 : 1,222,062,081.48 = 400,288,703.12 : x
  2. Step 2: Convert to fraction form
    815,294,522.96/1,222,062,081.48 = 400,288,703.12/x
  3. Step 3: Cross multiply
    815,294,522.96x = 1,222,062,081.48 × 400,288,703.12
  4. Step 4: Simplify right side
    815,294,522.96x = 489,177,645,727,756,992
  5. Step 5: Solve for x
    x = 489,177,645,727,756,992/815,294,522.96
  6. Step 6: Final answer
    x = 600,001,143.09

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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.