Home / 1,188,866,380.44-1,640,590,658.06-660,264,417.12

Finding the Fourth Proportional to 1,188,866,380.44, 1,640,590,658.06 and 660,264,417.12

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Solution

The fourth proportional to 1,188,866,380.44, 1,640,590,658.06 and 660,264,417.12 is: 911,139,933.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,188,866,380.44 : 1,640,590,658.06 = 660,264,417.12 : x
  2. Step 2: Convert to fraction form
    1,188,866,380.44/1,640,590,658.06 = 660,264,417.12/x
  3. Step 3: Cross multiply
    1,188,866,380.44x = 1,640,590,658.06 × 660,264,417.12
  4. Step 4: Simplify right side
    1,188,866,380.44x = 1,083,223,634,576,503,040
  5. Step 5: Solve for x
    x = 1,083,223,634,576,503,040/1,188,866,380.44
  6. Step 6: Final answer
    x = 911,139,933.30

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.