Finding the Fourth Proportional to 1,129,706.21, 1,558,989.50 and 613,455.91
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Solution
The fourth proportional to 1,129,706.21, 1,558,989.50 and 613,455.91 is: 846,566.39
Step by Step Solution
- Step 1: Write the proportion equation
1,129,706.21 : 1,558,989.50 = 613,455.91 : x - Step 2: Convert to fraction form
1,129,706.21/1,558,989.50 = 613,455.91/x - Step 3: Cross multiply
1,129,706.21x = 1,558,989.50 × 613,455.91 - Step 4: Simplify right side
1,129,706.21x = 956,371,315,438.19 - Step 5: Solve for x
x = 956,371,315,438.19/1,129,706.21 - Step 6: Final answer
x = 846,566.39
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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.