Finding the Fourth Proportional to 1,290,468,233,252.80, 1,934,748,069,563.80 and 780,413,606,476.05
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Solution
The fourth proportional to 1,290,468,233,252.80, 1,934,748,069,563.80 and 780,413,606,476.05 is: 1,170,043,306,517.47
Step by Step Solution
- Step 1: Write the proportion equation
1,290,468,233,252.80 : 1,934,748,069,563.80 = 780,413,606,476.05 : x - Step 2: Convert to fraction form
1,290,468,233,252.80/1,934,748,069,563.80 = 780,413,606,476.05/x - Step 3: Cross multiply
1,290,468,233,252.80x = 1,934,748,069,563.80 × 780,413,606,476.05 - Step 4: Simplify right side
1,290,468,233,252.80x = 1,509,903,718,590,860,872,384,512 - Step 5: Solve for x
x = 1,509,903,718,590,860,872,384,512/1,290,468,233,252.80 - Step 6: Final answer
x = 1,170,043,306,517.47
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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.