Finding the Fourth Proportional to 917,214.21, 1,265,713.34 and 509,342.09
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Solution
The fourth proportional to 917,214.21, 1,265,713.34 and 509,342.09 is: 702,868.60
Step by Step Solution
- Step 1: Write the proportion equation
917,214.21 : 1,265,713.34 = 509,342.09 : x - Step 2: Convert to fraction form
917,214.21/1,265,713.34 = 509,342.09/x - Step 3: Cross multiply
917,214.21x = 1,265,713.34 × 509,342.09 - Step 4: Simplify right side
917,214.21x = 644,681,069,061.20 - Step 5: Solve for x
x = 644,681,069,061.20/917,214.21 - Step 6: Final answer
x = 702,868.60
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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.