Finding the Fourth Proportional to 1,122,804.38, 1,549,282.65 and 639,376.94
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Solution
The fourth proportional to 1,122,804.38, 1,549,282.65 and 639,376.94 is: 882,233.47
Step by Step Solution
- Step 1: Write the proportion equation
1,122,804.38 : 1,549,282.65 = 639,376.94 : x - Step 2: Convert to fraction form
1,122,804.38/1,549,282.65 = 639,376.94/x - Step 3: Cross multiply
1,122,804.38x = 1,549,282.65 × 639,376.94 - Step 4: Simplify right side
1,122,804.38x = 990,575,601,427.63 - Step 5: Solve for x
x = 990,575,601,427.63/1,122,804.38 - Step 6: Final answer
x = 882,233.47
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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.