Finding the Fourth Proportional to 1,179,116.19, 1,768,586.81 and 420,871.14
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Solution
The fourth proportional to 1,179,116.19, 1,768,586.81 and 420,871.14 is: 631,275.49
Step by Step Solution
- Step 1: Write the proportion equation
1,179,116.19 : 1,768,586.81 = 420,871.14 : x - Step 2: Convert to fraction form
1,179,116.19/1,768,586.81 = 420,871.14/x - Step 3: Cross multiply
1,179,116.19x = 1,768,586.81 × 420,871.14 - Step 4: Simplify right side
1,179,116.19x = 744,347,144,809.31 - Step 5: Solve for x
x = 744,347,144,809.31/1,179,116.19 - Step 6: Final answer
x = 631,275.49
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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.