Finding the Fourth Proportional to 1,918,415.39, 2,647,413.74 and 1,058,976.23
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Solution
The fourth proportional to 1,918,415.39, 2,647,413.74 and 1,058,976.23 is: 1,461,387.47
Step by Step Solution
- Step 1: Write the proportion equation
1,918,415.39 : 2,647,413.74 = 1,058,976.23 : x - Step 2: Convert to fraction form
1,918,415.39/2,647,413.74 = 1,058,976.23/x - Step 3: Cross multiply
1,918,415.39x = 2,647,413.74 × 1,058,976.23 - Step 4: Simplify right side
1,918,415.39x = 2,803,548,221,635.40 - Step 5: Solve for x
x = 2,803,548,221,635.40/1,918,415.39 - Step 6: Final answer
x = 1,461,387.47
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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.