Home / 861,311,616.21-1,188,453,243.47-484,909,670.61

Finding the Fourth Proportional to 861,311,616.21, 1,188,453,243.47 and 484,909,670.61

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Solution

The fourth proportional to 861,311,616.21, 1,188,453,243.47 and 484,909,670.61 is: 669,087,076.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,311,616.21 : 1,188,453,243.47 = 484,909,670.61 : x
  2. Step 2: Convert to fraction form
    861,311,616.21/1,188,453,243.47 = 484,909,670.61/x
  3. Step 3: Cross multiply
    861,311,616.21x = 1,188,453,243.47 × 484,909,670.61
  4. Step 4: Simplify right side
    861,311,616.21x = 576,292,470,823,999,232
  5. Step 5: Solve for x
    x = 576,292,470,823,999,232/861,311,616.21
  6. Step 6: Final answer
    x = 669,087,076.01

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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.