Finding the Fourth Proportional to 1,122,716.49, 1,549,350.42 and 639,282.03
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Solution
The fourth proportional to 1,122,716.49, 1,549,350.42 and 639,282.03 is: 882,210.15
Step by Step Solution
- Step 1: Write the proportion equation
1,122,716.49 : 1,549,350.42 = 639,282.03 : x - Step 2: Convert to fraction form
1,122,716.49/1,549,350.42 = 639,282.03/x - Step 3: Cross multiply
1,122,716.49x = 1,549,350.42 × 639,282.03 - Step 4: Simplify right side
1,122,716.49x = 990,471,881,678.95 - Step 5: Solve for x
x = 990,471,881,678.95/1,122,716.49 - Step 6: Final answer
x = 882,210.15
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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.