Finding the Fourth Proportional to 3,639,908.40, 5,459,862.60 and 1,243,393.80
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Solution
The fourth proportional to 3,639,908.40, 5,459,862.60 and 1,243,393.80 is: 1,865,090.70
Step by Step Solution
- Step 1: Write the proportion equation
3,639,908.40 : 5,459,862.60 = 1,243,393.80 : x - Step 2: Convert to fraction form
3,639,908.40/5,459,862.60 = 1,243,393.80/x - Step 3: Cross multiply
3,639,908.40x = 5,459,862.60 × 1,243,393.80 - Step 4: Simplify right side
3,639,908.40x = 6,788,759,305,691.88 - Step 5: Solve for x
x = 6,788,759,305,691.88/3,639,908.40 - Step 6: Final answer
x = 1,865,090.70
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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.