Finding the Fourth Proportional to 1,006,721.09, 1,389,275.30 and 554,012.09
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Solution
The fourth proportional to 1,006,721.09, 1,389,275.30 and 554,012.09 is: 764,536.79
Step by Step Solution
- Step 1: Write the proportion equation
1,006,721.09 : 1,389,275.30 = 554,012.09 : x - Step 2: Convert to fraction form
1,006,721.09/1,389,275.30 = 554,012.09/x - Step 3: Cross multiply
1,006,721.09x = 1,389,275.30 × 554,012.09 - Step 4: Simplify right side
1,006,721.09x = 769,675,309,768.32 - Step 5: Solve for x
x = 769,675,309,768.32/1,006,721.09 - Step 6: Final answer
x = 764,536.79
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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.