Home / 2,512,191,981.31-3,768,849,995.69-765,531,418.75

Finding the Fourth Proportional to 2,512,191,981.31, 3,768,849,995.69 and 765,531,418.75

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Solution

The fourth proportional to 2,512,191,981.31, 3,768,849,995.69 and 765,531,418.75 is: 1,148,468,391.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,512,191,981.31 : 3,768,849,995.69 = 765,531,418.75 : x
  2. Step 2: Convert to fraction form
    2,512,191,981.31/3,768,849,995.69 = 765,531,418.75/x
  3. Step 3: Cross multiply
    2,512,191,981.31x = 3,768,849,995.69 × 765,531,418.75
  4. Step 4: Simplify right side
    2,512,191,981.31x = 2,885,173,084,256,497,152
  5. Step 5: Solve for x
    x = 2,885,173,084,256,497,152/2,512,191,981.31
  6. Step 6: Final answer
    x = 1,148,468,391.64

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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.