Home / 1,116,642,418.88-1,538,128,680.98-851,864,728.91

Finding the Fourth Proportional to 1,116,642,418.88, 1,538,128,680.98 and 851,864,728.91

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Solution

The fourth proportional to 1,116,642,418.88, 1,538,128,680.98 and 851,864,728.91 is: 1,173,408,380.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,116,642,418.88 : 1,538,128,680.98 = 851,864,728.91 : x
  2. Step 2: Convert to fraction form
    1,116,642,418.88/1,538,128,680.98 = 851,864,728.91/x
  3. Step 3: Cross multiply
    1,116,642,418.88x = 1,538,128,680.98 × 851,864,728.91
  4. Step 4: Simplify right side
    1,116,642,418.88x = 1,310,277,571,839,773,440
  5. Step 5: Solve for x
    x = 1,310,277,571,839,773,440/1,116,642,418.88
  6. Step 6: Final answer
    x = 1,173,408,380.06

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1.5x scale

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.