Finding the Fourth Proportional to 1,646,728.13, 2,272,435.92 and 911,715.10
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Solution
The fourth proportional to 1,646,728.13, 2,272,435.92 and 911,715.10 is: 1,258,139.76
Step by Step Solution
- Step 1: Write the proportion equation
1,646,728.13 : 2,272,435.92 = 911,715.10 : x - Step 2: Convert to fraction form
1,646,728.13/2,272,435.92 = 911,715.10/x - Step 3: Cross multiply
1,646,728.13x = 2,272,435.92 × 911,715.10 - Step 4: Simplify right side
1,646,728.13x = 2,071,814,136,365.30 - Step 5: Solve for x
x = 2,071,814,136,365.30/1,646,728.13 - Step 6: Final answer
x = 1,258,139.76
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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.