Home / 490,561,427.64-676,858,380.48-278,851,642.56

Finding the Fourth Proportional to 490,561,427.64, 676,858,380.48 and 278,851,642.56

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Solution

The fourth proportional to 490,561,427.64, 676,858,380.48 and 278,851,642.56 is: 384,749,106.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,561,427.64 : 676,858,380.48 = 278,851,642.56 : x
  2. Step 2: Convert to fraction form
    490,561,427.64/676,858,380.48 = 278,851,642.56/x
  3. Step 3: Cross multiply
    490,561,427.64x = 676,858,380.48 × 278,851,642.56
  4. Step 4: Simplify right side
    490,561,427.64x = 188,743,071,177,349,440
  5. Step 5: Solve for x
    x = 188,743,071,177,349,440/490,561,427.64
  6. Step 6: Final answer
    x = 384,749,106.93

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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.