Finding the Fourth Proportional to 1,121,649.36, 1,547,867.97 and 612,351.60
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Solution
The fourth proportional to 1,121,649.36, 1,547,867.97 and 612,351.60 is: 845,040.76
Step by Step Solution
- Step 1: Write the proportion equation
1,121,649.36 : 1,547,867.97 = 612,351.60 : x - Step 2: Convert to fraction form
1,121,649.36/1,547,867.97 = 612,351.60/x - Step 3: Cross multiply
1,121,649.36x = 1,547,867.97 × 612,351.60 - Step 4: Simplify right side
1,121,649.36x = 947,839,428,018.25 - Step 5: Solve for x
x = 947,839,428,018.25/1,121,649.36 - Step 6: Final answer
x = 845,040.76
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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.