Finding the Fourth Proportional to 1,617,504.80, 2,427,812.40 and 819,687.20
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Solution
The fourth proportional to 1,617,504.80, 2,427,812.40 and 819,687.20 is: 1,230,318.91
Step by Step Solution
- Step 1: Write the proportion equation
1,617,504.80 : 2,427,812.40 = 819,687.20 : x - Step 2: Convert to fraction form
1,617,504.80/2,427,812.40 = 819,687.20/x - Step 3: Cross multiply
1,617,504.80x = 2,427,812.40 × 819,687.20 - Step 4: Simplify right side
1,617,504.80x = 1,990,046,748,281.28 - Step 5: Solve for x
x = 1,990,046,748,281.28/1,617,504.80 - Step 6: Final answer
x = 1,230,318.91
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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.