Finding the Fourth Proportional to 1,288,739.14, 1,778,410.83 and 715,816.06
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Solution
The fourth proportional to 1,288,739.14, 1,778,410.83 and 715,816.06 is: 987,798.84
Step by Step Solution
- Step 1: Write the proportion equation
1,288,739.14 : 1,778,410.83 = 715,816.06 : x - Step 2: Convert to fraction form
1,288,739.14/1,778,410.83 = 715,816.06/x - Step 3: Cross multiply
1,288,739.14x = 1,778,410.83 × 715,816.06 - Step 4: Simplify right side
1,288,739.14x = 1,273,015,033,391.93 - Step 5: Solve for x
x = 1,273,015,033,391.93/1,288,739.14 - Step 6: Final answer
x = 987,798.84
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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.