Finding the Fourth Proportional to 1,218,116.21, 1,680,613.92 and 708,720.17
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Solution
The fourth proportional to 1,218,116.21, 1,680,613.92 and 708,720.17 is: 977,808.99
Step by Step Solution
- Step 1: Write the proportion equation
1,218,116.21 : 1,680,613.92 = 708,720.17 : x - Step 2: Convert to fraction form
1,218,116.21/1,680,613.92 = 708,720.17/x - Step 3: Cross multiply
1,218,116.21x = 1,680,613.92 × 708,720.17 - Step 4: Simplify right side
1,218,116.21x = 1,191,084,974,683.70 - Step 5: Solve for x
x = 1,191,084,974,683.70/1,218,116.21 - Step 6: Final answer
x = 977,808.99
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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.