Finding the Fourth Proportional to 1,272,009.80, 1,755,373.20 and 699,087.08
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Solution
The fourth proportional to 1,272,009.80, 1,755,373.20 and 699,087.08 is: 964,739.99
Step by Step Solution
- Step 1: Write the proportion equation
1,272,009.80 : 1,755,373.20 = 699,087.08 : x - Step 2: Convert to fraction form
1,272,009.80/1,755,373.20 = 699,087.08/x - Step 3: Cross multiply
1,272,009.80x = 1,755,373.20 × 699,087.08 - Step 4: Simplify right side
1,272,009.80x = 1,227,158,724,698.26 - Step 5: Solve for x
x = 1,227,158,724,698.26/1,272,009.80 - Step 6: Final answer
x = 964,739.99
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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.