Finding the Fourth Proportional to 1,965,987.31, 2,711,664.91 and 1,312,283.74
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Solution
The fourth proportional to 1,965,987.31, 2,711,664.91 and 1,312,283.74 is: 1,810,018.69
Step by Step Solution
- Step 1: Write the proportion equation
1,965,987.31 : 2,711,664.91 = 1,312,283.74 : x - Step 2: Convert to fraction form
1,965,987.31/2,711,664.91 = 1,312,283.74/x - Step 3: Cross multiply
1,965,987.31x = 2,711,664.91 × 1,312,283.74 - Step 4: Simplify right side
1,965,987.31x = 3,558,473,769,721.56 - Step 5: Solve for x
x = 3,558,473,769,721.56/1,965,987.31 - Step 6: Final answer
x = 1,810,018.69
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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.