Home / 1,188,866,381.44-1,640,590,659.44-660,264,418.12

Finding the Fourth Proportional to 1,188,866,381.44, 1,640,590,659.44 and 660,264,418.12

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Solution

The fourth proportional to 1,188,866,381.44, 1,640,590,659.44 and 660,264,418.12 is: 911,139,934.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,188,866,381.44 : 1,640,590,659.44 = 660,264,418.12 : x
  2. Step 2: Convert to fraction form
    1,188,866,381.44/1,640,590,659.44 = 660,264,418.12/x
  3. Step 3: Cross multiply
    1,188,866,381.44x = 1,640,590,659.44 × 660,264,418.12
  4. Step 4: Simplify right side
    1,188,866,381.44x = 1,083,223,637,128,258,688
  5. Step 5: Solve for x
    x = 1,083,223,637,128,258,688/1,188,866,381.44
  6. Step 6: Final answer
    x = 911,139,934.68

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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.