Finding the Fourth Proportional to 2,165,785.14, 2,988,784.38 and 1,185,787.68
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Solution
The fourth proportional to 2,165,785.14, 2,988,784.38 and 1,185,787.68 is: 1,636,387.48
Step by Step Solution
- Step 1: Write the proportion equation
2,165,785.14 : 2,988,784.38 = 1,185,787.68 : x - Step 2: Convert to fraction form
2,165,785.14/2,988,784.38 = 1,185,787.68/x - Step 3: Cross multiply
2,165,785.14x = 2,988,784.38 × 1,185,787.68 - Step 4: Simplify right side
2,165,785.14x = 3,544,063,695,980.44 - Step 5: Solve for x
x = 3,544,063,695,980.44/2,165,785.14 - Step 6: Final answer
x = 1,636,387.48
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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.