Finding the Fourth Proportional to 1,917,341.80, 2,646,890.44 and 1,192,423.12
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Solution
The fourth proportional to 1,917,341.80, 2,646,890.44 and 1,192,423.12 is: 1,646,140.17
Step by Step Solution
- Step 1: Write the proportion equation
1,917,341.80 : 2,646,890.44 = 1,192,423.12 : x - Step 2: Convert to fraction form
1,917,341.80/2,646,890.44 = 1,192,423.12/x - Step 3: Cross multiply
1,917,341.80x = 2,646,890.44 × 1,192,423.12 - Step 4: Simplify right side
1,917,341.80x = 3,156,213,356,762.97 - Step 5: Solve for x
x = 3,156,213,356,762.97/1,917,341.80 - Step 6: Final answer
x = 1,646,140.17
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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.