Finding the Fourth Proportional to 1,122,486.13, 1,549,032.30 and 639,051.26
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Solution
The fourth proportional to 1,122,486.13, 1,549,032.30 and 639,051.26 is: 881,891.56
Step by Step Solution
- Step 1: Write the proportion equation
1,122,486.13 : 1,549,032.30 = 639,051.26 : x - Step 2: Convert to fraction form
1,122,486.13/1,549,032.30 = 639,051.26/x - Step 3: Cross multiply
1,122,486.13x = 1,549,032.30 × 639,051.26 - Step 4: Simplify right side
1,122,486.13x = 989,911,046,968.28 - Step 5: Solve for x
x = 989,911,046,968.28/1,122,486.13 - Step 6: Final answer
x = 881,891.56
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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.