Finding the Fourth Proportional to 1,227,985.80, 1,694,672.70 and 684,121.28
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Solution
The fourth proportional to 1,227,985.80, 1,694,672.70 and 684,121.28 is: 944,116.50
Step by Step Solution
- Step 1: Write the proportion equation
1,227,985.80 : 1,694,672.70 = 684,121.28 : x - Step 2: Convert to fraction form
1,227,985.80/1,694,672.70 = 684,121.28/x - Step 3: Cross multiply
1,227,985.80x = 1,694,672.70 × 684,121.28 - Step 4: Simplify right side
1,227,985.80x = 1,159,361,656,705.06 - Step 5: Solve for x
x = 1,159,361,656,705.06/1,227,985.80 - Step 6: Final answer
x = 944,116.50
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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.