Finding the Fourth Proportional to 1,216,639.79, 1,678,973.80 and 672,812.17
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Solution
The fourth proportional to 1,216,639.79, 1,678,973.80 and 672,812.17 is: 928,486.82
Step by Step Solution
- Step 1: Write the proportion equation
1,216,639.79 : 1,678,973.80 = 672,812.17 : x - Step 2: Convert to fraction form
1,216,639.79/1,678,973.80 = 672,812.17/x - Step 3: Cross multiply
1,216,639.79x = 1,678,973.80 × 672,812.17 - Step 4: Simplify right side
1,216,639.79x = 1,129,634,008,685.15 - Step 5: Solve for x
x = 1,129,634,008,685.15/1,216,639.79 - Step 6: Final answer
x = 928,486.82
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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.