Finding the Fourth Proportional to 518,657,357.14, 778,040,533.79 and 168,930,658.19
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Solution
The fourth proportional to 518,657,357.14, 778,040,533.79 and 168,930,658.19 is: 253,413,737.72
Step by Step Solution
- Step 1: Write the proportion equation
518,657,357.14 : 778,040,533.79 = 168,930,658.19 : x - Step 2: Convert to fraction form
518,657,357.14/778,040,533.79 = 168,930,658.19/x - Step 3: Cross multiply
518,657,357.14x = 778,040,533.79 × 168,930,658.19 - Step 4: Simplify right side
518,657,357.14x = 131,434,899,469,534,048 - Step 5: Solve for x
x = 131,434,899,469,534,048/518,657,357.14 - Step 6: Final answer
x = 253,413,737.72
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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.