Finding the Fourth Proportional to 912,257.09, 1,258,911.65 and 509,849.09
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Solution
The fourth proportional to 912,257.09, 1,258,911.65 and 509,849.09 is: 703,589.99
Step by Step Solution
- Step 1: Write the proportion equation
912,257.09 : 1,258,911.65 = 509,849.09 : x - Step 2: Convert to fraction form
912,257.09/1,258,911.65 = 509,849.09/x - Step 3: Cross multiply
912,257.09x = 1,258,911.65 × 509,849.09 - Step 4: Simplify right side
912,257.09x = 641,854,956,593.65 - Step 5: Solve for x
x = 641,854,956,593.65/912,257.09 - Step 6: Final answer
x = 703,589.99
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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.