Home / 1,389,290,016.60-2,082,021,837.30-921,621,936.60

Finding the Fourth Proportional to 1,389,290,016.60, 2,082,021,837.30 and 921,621,936.60

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Solution

The fourth proportional to 1,389,290,016.60, 2,082,021,837.30 and 921,621,936.60 is: 1,381,163,741.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,389,290,016.60 : 2,082,021,837.30 = 921,621,936.60 : x
  2. Step 2: Convert to fraction form
    1,389,290,016.60/2,082,021,837.30 = 921,621,936.60/x
  3. Step 3: Cross multiply
    1,389,290,016.60x = 2,082,021,837.30 × 921,621,936.60
  4. Step 4: Simplify right side
    1,389,290,016.60x = 1,918,836,997,735,916,032
  5. Step 5: Solve for x
    x = 1,918,836,997,735,916,032/1,389,290,016.60
  6. Step 6: Final answer
    x = 1,381,163,741.77

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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.