Finding the Fourth Proportional to 912,690.39, 1,368,744.42 and 313,507.05
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Solution
The fourth proportional to 912,690.39, 1,368,744.42 and 313,507.05 is: 470,160.56
Step by Step Solution
- Step 1: Write the proportion equation
912,690.39 : 1,368,744.42 = 313,507.05 : x - Step 2: Convert to fraction form
912,690.39/1,368,744.42 = 313,507.05/x - Step 3: Cross multiply
912,690.39x = 1,368,744.42 × 313,507.05 - Step 4: Simplify right side
912,690.39x = 429,111,025,318.16 - Step 5: Solve for x
x = 429,111,025,318.16/912,690.39 - Step 6: Final answer
x = 470,160.56
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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.