Finding the Fourth Proportional to 1,109,987.40, 1,531,408.68 and 722,625.96
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Solution
The fourth proportional to 1,109,987.40, 1,531,408.68 and 722,625.96 is: 996,980.39
Step by Step Solution
- Step 1: Write the proportion equation
1,109,987.40 : 1,531,408.68 = 722,625.96 : x - Step 2: Convert to fraction form
1,109,987.40/1,531,408.68 = 722,625.96/x - Step 3: Cross multiply
1,109,987.40x = 1,531,408.68 × 722,625.96 - Step 4: Simplify right side
1,109,987.40x = 1,106,635,667,537.33 - Step 5: Solve for x
x = 1,106,635,667,537.33/1,109,987.40 - Step 6: Final answer
x = 996,980.39
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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.