Finding the Fourth Proportional to 1,855,621.49, 2,778,707.10 and 1,222,616.21
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Solution
The fourth proportional to 1,855,621.49, 2,778,707.10 and 1,222,616.21 is: 1,830,811.06
Step by Step Solution
- Step 1: Write the proportion equation
1,855,621.49 : 2,778,707.10 = 1,222,616.21 : x - Step 2: Convert to fraction form
1,855,621.49/2,778,707.10 = 1,222,616.21/x - Step 3: Cross multiply
1,855,621.49x = 2,778,707.10 × 1,222,616.21 - Step 4: Simplify right side
1,855,621.49x = 3,397,292,343,302.09 - Step 5: Solve for x
x = 3,397,292,343,302.09/1,855,621.49 - Step 6: Final answer
x = 1,830,811.06
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.