Home / 1,188,128,907.40-1,782,193,361.10-1,086,008,254.60

Finding the Fourth Proportional to 1,188,128,907.40, 1,782,193,361.10 and 1,086,008,254.60

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Solution

The fourth proportional to 1,188,128,907.40, 1,782,193,361.10 and 1,086,008,254.60 is: 1,629,012,381.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,188,128,907.40 : 1,782,193,361.10 = 1,086,008,254.60 : x
  2. Step 2: Convert to fraction form
    1,188,128,907.40/1,782,193,361.10 = 1,086,008,254.60/x
  3. Step 3: Cross multiply
    1,188,128,907.40x = 1,782,193,361.10 × 1,086,008,254.60
  4. Step 4: Simplify right side
    1,188,128,907.40x = 1,935,476,701,447,918,336
  5. Step 5: Solve for x
    x = 1,935,476,701,447,918,336/1,188,128,907.40
  6. Step 6: Final answer
    x = 1,629,012,381.90

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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.