Finding the Fourth Proportional to 1,217,584,219,653.80, 1,680,267,324,393.60 and 668,911,067,745.08
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Solution
The fourth proportional to 1,217,584,219,653.80, 1,680,267,324,393.60 and 668,911,067,745.08 is: 923,097,878,499.83
Step by Step Solution
- Step 1: Write the proportion equation
1,217,584,219,653.80 : 1,680,267,324,393.60 = 668,911,067,745.08 : x - Step 2: Convert to fraction form
1,217,584,219,653.80/1,680,267,324,393.60 = 668,911,067,745.08/x - Step 3: Cross multiply
1,217,584,219,653.80x = 1,680,267,324,393.60 × 668,911,067,745.08 - Step 4: Simplify right side
1,217,584,219,653.80x = 1,123,949,410,057,291,718,197,248 - Step 5: Solve for x
x = 1,123,949,410,057,291,718,197,248/1,217,584,219,653.80 - Step 6: Final answer
x = 923,097,878,499.83
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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.