Finding the Fourth Proportional to 1,129,726.36, 1,559,058.29 and 620,428.73
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Solution
The fourth proportional to 1,129,726.36, 1,559,058.29 and 620,428.73 is: 856,211.38
Step by Step Solution
- Step 1: Write the proportion equation
1,129,726.36 : 1,559,058.29 = 620,428.73 : x - Step 2: Convert to fraction form
1,129,726.36/1,559,058.29 = 620,428.73/x - Step 3: Cross multiply
1,129,726.36x = 1,559,058.29 × 620,428.73 - Step 4: Simplify right side
1,129,726.36x = 967,284,560,309.39 - Step 5: Solve for x
x = 967,284,560,309.39/1,129,726.36 - Step 6: Final answer
x = 856,211.38
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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.