Finding the Fourth Proportional to 1,369,876.19, 1,890,959.11 and 1,226,387.12
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Solution
The fourth proportional to 1,369,876.19, 1,890,959.11 and 1,226,387.12 is: 1,692,888.68
Step by Step Solution
- Step 1: Write the proportion equation
1,369,876.19 : 1,890,959.11 = 1,226,387.12 : x - Step 2: Convert to fraction form
1,369,876.19/1,890,959.11 = 1,226,387.12/x - Step 3: Cross multiply
1,369,876.19x = 1,890,959.11 × 1,226,387.12 - Step 4: Simplify right side
1,369,876.19x = 2,319,047,884,429.90 - Step 5: Solve for x
x = 2,319,047,884,429.90/1,369,876.19 - Step 6: Final answer
x = 1,692,888.68
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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.