Finding the Fourth Proportional to 1,121,717.51, 1,547,962.08 and 612,419.88
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Solution
The fourth proportional to 1,121,717.51, 1,547,962.08 and 612,419.88 is: 845,135.02
Step by Step Solution
- Step 1: Write the proportion equation
1,121,717.51 : 1,547,962.08 = 612,419.88 : x - Step 2: Convert to fraction form
1,121,717.51/1,547,962.08 = 612,419.88/x - Step 3: Cross multiply
1,121,717.51x = 1,547,962.08 × 612,419.88 - Step 4: Simplify right side
1,121,717.51x = 948,002,754,786.43 - Step 5: Solve for x
x = 948,002,754,786.43/1,121,717.51 - Step 6: Final answer
x = 845,135.02
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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.