Finding the Fourth Proportional to 861,718.76, 1,292,578.47 and 860,473.54
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Solution
The fourth proportional to 861,718.76, 1,292,578.47 and 860,473.54 is: 1,290,710.63
Step by Step Solution
- Step 1: Write the proportion equation
861,718.76 : 1,292,578.47 = 860,473.54 : x - Step 2: Convert to fraction form
861,718.76/1,292,578.47 = 860,473.54/x - Step 3: Cross multiply
861,718.76x = 1,292,578.47 × 860,473.54 - Step 4: Simplify right side
861,718.76x = 1,112,229,565,345.79 - Step 5: Solve for x
x = 1,112,229,565,345.79/861,718.76 - Step 6: Final answer
x = 1,290,710.63
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.