Finding the Fourth Proportional to 1,121,422.79, 1,547,563.05 and 612,125.17
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Solution
The fourth proportional to 1,121,422.79, 1,547,563.05 and 612,125.17 is: 844,732.51
Step by Step Solution
- Step 1: Write the proportion equation
1,121,422.79 : 1,547,563.05 = 612,125.17 : x - Step 2: Convert to fraction form
1,121,422.79/1,547,563.05 = 612,125.17/x - Step 3: Cross multiply
1,121,422.79x = 1,547,563.05 × 612,125.17 - Step 4: Simplify right side
1,121,422.79x = 947,302,291,198.06 - Step 5: Solve for x
x = 947,302,291,198.06/1,121,422.79 - Step 6: Final answer
x = 844,732.51
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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.