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Finding the Fourth Proportional to 618,674,272.44, 856,018,734.51 and 539,454,414.30

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Solution

The fourth proportional to 618,674,272.44, 856,018,734.51 and 539,454,414.30 is: 746,407,448.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,674,272.44 : 856,018,734.51 = 539,454,414.30 : x
  2. Step 2: Convert to fraction form
    618,674,272.44/856,018,734.51 = 539,454,414.30/x
  3. Step 3: Cross multiply
    618,674,272.44x = 856,018,734.51 × 539,454,414.30
  4. Step 4: Simplify right side
    618,674,272.44x = 461,783,085,054,919,232
  5. Step 5: Solve for x
    x = 461,783,085,054,919,232/618,674,272.44
  6. Step 6: Final answer
    x = 746,407,448.36

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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.