Finding the Fourth Proportional to 1,587,045.78, 2,190,122.60 and 861,893.72
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Solution
The fourth proportional to 1,587,045.78, 2,190,122.60 and 861,893.72 is: 1,189,413.02
Step by Step Solution
- Step 1: Write the proportion equation
1,587,045.78 : 2,190,122.60 = 861,893.72 : x - Step 2: Convert to fraction form
1,587,045.78/2,190,122.60 = 861,893.72/x - Step 3: Cross multiply
1,587,045.78x = 2,190,122.60 × 861,893.72 - Step 4: Simplify right side
1,587,045.78x = 1,887,652,914,970.07 - Step 5: Solve for x
x = 1,887,652,914,970.07/1,587,045.78 - Step 6: Final answer
x = 1,189,413.02
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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.