Home / 1,188,866,375.43-1,640,590,651.17-660,264,412.11

Finding the Fourth Proportional to 1,188,866,375.43, 1,640,590,651.17 and 660,264,412.11

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Solution

The fourth proportional to 1,188,866,375.43, 1,640,590,651.17 and 660,264,412.11 is: 911,139,926.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,188,866,375.43 : 1,640,590,651.17 = 660,264,412.11 : x
  2. Step 2: Convert to fraction form
    1,188,866,375.43/1,640,590,651.17 = 660,264,412.11/x
  3. Step 3: Cross multiply
    1,188,866,375.43x = 1,640,590,651.17 × 660,264,412.11
  4. Step 4: Simplify right side
    1,188,866,375.43x = 1,083,223,621,807,922,176
  5. Step 5: Solve for x
    x = 1,083,223,621,807,922,176/1,188,866,375.43
  6. Step 6: Final answer
    x = 911,139,926.40

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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.