Finding the Fourth Proportional to 1,121,623.63, 1,547,832.72 and 612,326.01
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Solution
The fourth proportional to 1,121,623.63, 1,547,832.72 and 612,326.01 is: 845,005.59
Step by Step Solution
- Step 1: Write the proportion equation
1,121,623.63 : 1,547,832.72 = 612,326.01 : x - Step 2: Convert to fraction form
1,121,623.63/1,547,832.72 = 612,326.01/x - Step 3: Cross multiply
1,121,623.63x = 1,547,832.72 × 612,326.01 - Step 4: Simplify right side
1,121,623.63x = 947,778,233,585.05 - Step 5: Solve for x
x = 947,778,233,585.05/1,121,623.63 - Step 6: Final answer
x = 845,005.59
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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.