Finding the Fourth Proportional to 1,288,485.44, 1,778,192.18 and 715,525.60
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Solution
The fourth proportional to 1,288,485.44, 1,778,192.18 and 715,525.60 is: 987,471.02
Step by Step Solution
- Step 1: Write the proportion equation
1,288,485.44 : 1,778,192.18 = 715,525.60 : x - Step 2: Convert to fraction form
1,288,485.44/1,778,192.18 = 715,525.60/x - Step 3: Cross multiply
1,288,485.44x = 1,778,192.18 × 715,525.60 - Step 4: Simplify right side
1,288,485.44x = 1,272,342,026,509.81 - Step 5: Solve for x
x = 1,272,342,026,509.81/1,288,485.44 - Step 6: Final answer
x = 987,471.02
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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.