Finding the Fourth Proportional to 386,294,711.80, 579,442,067.70 and 295,595,447.80
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Solution
The fourth proportional to 386,294,711.80, 579,442,067.70 and 295,595,447.80 is: 443,393,171.70
Step by Step Solution
- Step 1: Write the proportion equation
386,294,711.80 : 579,442,067.70 = 295,595,447.80 : x - Step 2: Convert to fraction form
386,294,711.80/579,442,067.70 = 295,595,447.80/x - Step 3: Cross multiply
386,294,711.80x = 579,442,067.70 × 295,595,447.80 - Step 4: Simplify right side
386,294,711.80x = 171,280,437,475,939,424 - Step 5: Solve for x
x = 171,280,437,475,939,424/386,294,711.80 - Step 6: Final answer
x = 443,393,171.70
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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.