Finding the Fourth Proportional to 1,293,326,125.87, 1,784,790,835.59 and 698,610,872.93
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Solution
The fourth proportional to 1,293,326,125.87, 1,784,790,835.59 and 698,610,872.93 is: 964,083,426.99
Step by Step Solution
- Step 1: Write the proportion equation
1,293,326,125.87 : 1,784,790,835.59 = 698,610,872.93 : x - Step 2: Convert to fraction form
1,293,326,125.87/1,784,790,835.59 = 698,610,872.93/x - Step 3: Cross multiply
1,293,326,125.87x = 1,784,790,835.59 × 698,610,872.93 - Step 4: Simplify right side
1,293,326,125.87x = 1,246,874,283,644,212,992 - Step 5: Solve for x
x = 1,246,874,283,644,212,992/1,293,326,125.87 - Step 6: Final answer
x = 964,083,426.99
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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.