Finding the Fourth Proportional to 1,138,357.18, 1,570,871.10 and 629,026.75
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Solution
The fourth proportional to 1,138,357.18, 1,570,871.10 and 629,026.75 is: 868,022.76
Step by Step Solution
- Step 1: Write the proportion equation
1,138,357.18 : 1,570,871.10 = 629,026.75 : x - Step 2: Convert to fraction form
1,138,357.18/1,570,871.10 = 629,026.75/x - Step 3: Cross multiply
1,138,357.18x = 1,570,871.10 × 629,026.75 - Step 4: Simplify right side
1,138,357.18x = 988,119,942,701.93 - Step 5: Solve for x
x = 988,119,942,701.93/1,138,357.18 - Step 6: Final answer
x = 868,022.76
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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.