Finding the Fourth Proportional to 1,121,423.68, 1,680,413.52 and 761,126.56
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Solution
The fourth proportional to 1,121,423.68, 1,680,413.52 and 761,126.56 is: 1,140,521.09
Step by Step Solution
- Step 1: Write the proportion equation
1,121,423.68 : 1,680,413.52 = 761,126.56 : x - Step 2: Convert to fraction form
1,121,423.68/1,680,413.52 = 761,126.56/x - Step 3: Cross multiply
1,121,423.68x = 1,680,413.52 × 761,126.56 - Step 4: Simplify right side
1,121,423.68x = 1,279,007,361,855.09 - Step 5: Solve for x
x = 1,279,007,361,855.09/1,121,423.68 - Step 6: Final answer
x = 1,140,521.09
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.