Finding the Fourth Proportional to 1,916,415.20, 2,642,973.36 and 1,534,302.56
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Solution
The fourth proportional to 1,916,415.20, 2,642,973.36 and 1,534,302.56 is: 2,115,992.81
Step by Step Solution
- Step 1: Write the proportion equation
1,916,415.20 : 2,642,973.36 = 1,534,302.56 : x - Step 2: Convert to fraction form
1,916,415.20/2,642,973.36 = 1,534,302.56/x - Step 3: Cross multiply
1,916,415.20x = 2,642,973.36 × 1,534,302.56 - Step 4: Simplify right side
1,916,415.20x = 4,055,120,792,259.80 - Step 5: Solve for x
x = 4,055,120,792,259.80/1,916,415.20 - Step 6: Final answer
x = 2,115,992.81
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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.