Home / 1,290,834,739.95-1,936,647,268.55-661,012,735.11

Finding the Fourth Proportional to 1,290,834,739.95, 1,936,647,268.55 and 661,012,735.11

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Solution

The fourth proportional to 1,290,834,739.95, 1,936,647,268.55 and 661,012,735.11 is: 991,721,456.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,834,739.95 : 1,936,647,268.55 = 661,012,735.11 : x
  2. Step 2: Convert to fraction form
    1,290,834,739.95/1,936,647,268.55 = 661,012,735.11/x
  3. Step 3: Cross multiply
    1,290,834,739.95x = 1,936,647,268.55 × 661,012,735.11
  4. Step 4: Simplify right side
    1,290,834,739.95x = 1,280,148,507,927,546,112
  5. Step 5: Solve for x
    x = 1,280,148,507,927,546,112/1,290,834,739.95
  6. Step 6: Final answer
    x = 991,721,456.13

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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.