Finding the Fourth Proportional to 1,243,056,787.84, 1,715,418,537.96 and 686,139,952.96
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Solution
The fourth proportional to 1,243,056,787.84, 1,715,418,537.96 and 686,139,952.96 is: 946,873,229.33
Step by Step Solution
- Step 1: Write the proportion equation
1,243,056,787.84 : 1,715,418,537.96 = 686,139,952.96 : x - Step 2: Convert to fraction form
1,243,056,787.84/1,715,418,537.96 = 686,139,952.96/x - Step 3: Cross multiply
1,243,056,787.84x = 1,715,418,537.96 × 686,139,952.96 - Step 4: Simplify right side
1,243,056,787.84x = 1,177,017,194,942,586,368 - Step 5: Solve for x
x = 1,177,017,194,942,586,368/1,243,056,787.84 - Step 6: Final answer
x = 946,873,229.33
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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.