Finding the Fourth Proportional to 1,202,995.18, 1,660,069.78 and 686,728.59
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Solution
The fourth proportional to 1,202,995.18, 1,660,069.78 and 686,728.59 is: 947,649.17
Step by Step Solution
- Step 1: Write the proportion equation
1,202,995.18 : 1,660,069.78 = 686,728.59 : x - Step 2: Convert to fraction form
1,202,995.18/1,660,069.78 = 686,728.59/x - Step 3: Cross multiply
1,202,995.18x = 1,660,069.78 × 686,728.59 - Step 4: Simplify right side
1,202,995.18x = 1,140,017,379,321.01 - Step 5: Solve for x
x = 1,140,017,379,321.01/1,202,995.18 - Step 6: Final answer
x = 947,649.17
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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.