Home / 945,616,971.21-1,418,279,990.41-315,360,101.54

Finding the Fourth Proportional to 945,616,971.21, 1,418,279,990.41 and 315,360,101.54

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Solution

The fourth proportional to 945,616,971.21, 1,418,279,990.41 and 315,360,101.54 is: 472,991,639.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    945,616,971.21 : 1,418,279,990.41 = 315,360,101.54 : x
  2. Step 2: Convert to fraction form
    945,616,971.21/1,418,279,990.41 = 315,360,101.54/x
  3. Step 3: Cross multiply
    945,616,971.21x = 1,418,279,990.41 × 315,360,101.54
  4. Step 4: Simplify right side
    945,616,971.21x = 447,268,921,783,801,280
  5. Step 5: Solve for x
    x = 447,268,921,783,801,280/945,616,971.21
  6. Step 6: Final answer
    x = 472,991,639.74

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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.