Finding the Fourth Proportional to 1,290,986.54, 1,781,344.96 and 717,950.06
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Solution
The fourth proportional to 1,290,986.54, 1,781,344.96 and 717,950.06 is: 990,650.70
Step by Step Solution
- Step 1: Write the proportion equation
1,290,986.54 : 1,781,344.96 = 717,950.06 : x - Step 2: Convert to fraction form
1,290,986.54/1,781,344.96 = 717,950.06/x - Step 3: Cross multiply
1,290,986.54x = 1,781,344.96 × 717,950.06 - Step 4: Simplify right side
1,290,986.54x = 1,278,916,710,211.10 - Step 5: Solve for x
x = 1,278,916,710,211.10/1,290,986.54 - Step 6: Final answer
x = 990,650.70
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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.