Finding the Fourth Proportional to 2,154,689.09, 2,973,479.95 and 1,187,798.16
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Solution
The fourth proportional to 2,154,689.09, 2,973,479.95 and 1,187,798.16 is: 1,639,166.43
Step by Step Solution
- Step 1: Write the proportion equation
2,154,689.09 : 2,973,479.95 = 1,187,798.16 : x - Step 2: Convert to fraction form
2,154,689.09/2,973,479.95 = 1,187,798.16/x - Step 3: Cross multiply
2,154,689.09x = 2,973,479.95 × 1,187,798.16 - Step 4: Simplify right side
2,154,689.09x = 3,531,894,026,042.19 - Step 5: Solve for x
x = 3,531,894,026,042.19/2,154,689.09 - Step 6: Final answer
x = 1,639,166.43
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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.