Finding the Fourth Proportional to 678,920,378,960.09, 936,911,052,125.38 and 370,272,484,179.29
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Solution
The fourth proportional to 678,920,378,960.09, 936,911,052,125.38 and 370,272,484,179.29 is: 510,976,534,916.90
Step by Step Solution
- Step 1: Write the proportion equation
678,920,378,960.09 : 936,911,052,125.38 = 370,272,484,179.29 : x - Step 2: Convert to fraction form
678,920,378,960.09/936,911,052,125.38 = 370,272,484,179.29/x - Step 3: Cross multiply
678,920,378,960.09x = 936,911,052,125.38 × 370,272,484,179.29 - Step 4: Simplify right side
678,920,378,960.09x = 346,912,382,725,496,669,995,008 - Step 5: Solve for x
x = 346,912,382,725,496,669,995,008/678,920,378,960.09 - Step 6: Final answer
x = 510,976,534,916.90
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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.