Finding the Fourth Proportional to 5,138,878.95, 7,705,753.49 and 1,680,168.08
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Solution
The fourth proportional to 5,138,878.95, 7,705,753.49 and 1,680,168.08 is: 2,519,413.51
Step by Step Solution
- Step 1: Write the proportion equation
5,138,878.95 : 7,705,753.49 = 1,680,168.08 : x - Step 2: Convert to fraction form
5,138,878.95/7,705,753.49 = 1,680,168.08/x - Step 3: Cross multiply
5,138,878.95x = 7,705,753.49 × 1,680,168.08 - Step 4: Simplify right side
5,138,878.95x = 12,946,961,069,711.40 - Step 5: Solve for x
x = 12,946,961,069,711.40/5,138,878.95 - Step 6: Final answer
x = 2,519,413.51
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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.