Finding the Fourth Proportional to 912,908.09, 1,369,486.74 and 380,304.56
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Solution
The fourth proportional to 912,908.09, 1,369,486.74 and 380,304.56 is: 570,508.75
Step by Step Solution
- Step 1: Write the proportion equation
912,908.09 : 1,369,486.74 = 380,304.56 : x - Step 2: Convert to fraction form
912,908.09/1,369,486.74 = 380,304.56/x - Step 3: Cross multiply
912,908.09x = 1,369,486.74 × 380,304.56 - Step 4: Simplify right side
912,908.09x = 520,822,052,081.53 - Step 5: Solve for x
x = 520,822,052,081.53/912,908.09 - Step 6: Final answer
x = 570,508.75
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.