Finding the Fourth Proportional to 710,006,658.24, 979,790,391.42 and 396,743,446.38
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Solution
The fourth proportional to 710,006,658.24, 979,790,391.42 and 396,743,446.38 is: 547,495,452.49
Step by Step Solution
- Step 1: Write the proportion equation
710,006,658.24 : 979,790,391.42 = 396,743,446.38 : x - Step 2: Convert to fraction form
710,006,658.24/979,790,391.42 = 396,743,446.38/x - Step 3: Cross multiply
710,006,658.24x = 979,790,391.42 × 396,743,446.38 - Step 4: Simplify right side
710,006,658.24x = 388,725,416,621,979,968 - Step 5: Solve for x
x = 388,725,416,621,979,968/710,006,658.24 - Step 6: Final answer
x = 547,495,452.49
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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.