Home / 813,164,072.12-1,219,775,016.52-260,394,674.77

Finding the Fourth Proportional to 813,164,072.12, 1,219,775,016.52 and 260,394,674.77

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Solution

The fourth proportional to 813,164,072.12, 1,219,775,016.52 and 260,394,674.77 is: 390,601,269.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,164,072.12 : 1,219,775,016.52 = 260,394,674.77 : x
  2. Step 2: Convert to fraction form
    813,164,072.12/1,219,775,016.52 = 260,394,674.77/x
  3. Step 3: Cross multiply
    813,164,072.12x = 1,219,775,016.52 × 260,394,674.77
  4. Step 4: Simplify right side
    813,164,072.12x = 317,622,918,721,160,064
  5. Step 5: Solve for x
    x = 317,622,918,721,160,064/813,164,072.12
  6. Step 6: Final answer
    x = 390,601,269.30

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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.