Finding the Fourth Proportional to 3,178,975.19, 4,386,852.47 and 1,802,411.51
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Solution
The fourth proportional to 3,178,975.19, 4,386,852.47 and 1,802,411.51 is: 2,487,252.31
Step by Step Solution
- Step 1: Write the proportion equation
3,178,975.19 : 4,386,852.47 = 1,802,411.51 : x - Step 2: Convert to fraction form
3,178,975.19/4,386,852.47 = 1,802,411.51/x - Step 3: Cross multiply
3,178,975.19x = 4,386,852.47 × 1,802,411.51 - Step 4: Simplify right side
3,178,975.19x = 7,906,913,367,171.70 - Step 5: Solve for x
x = 7,906,913,367,171.70/3,178,975.19 - Step 6: Final answer
x = 2,487,252.31
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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.