Finding the Fourth Proportional to 815,501.10, 1,223,446.05 and 394,430.70
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Solution
The fourth proportional to 815,501.10, 1,223,446.05 and 394,430.70 is: 591,740.07
Step by Step Solution
- Step 1: Write the proportion equation
815,501.10 : 1,223,446.05 = 394,430.70 : x - Step 2: Convert to fraction form
815,501.10/1,223,446.05 = 394,430.70/x - Step 3: Cross multiply
815,501.10x = 1,223,446.05 × 394,430.70 - Step 4: Simplify right side
815,501.10x = 482,564,681,913.74 - Step 5: Solve for x
x = 482,564,681,913.74/815,501.10 - Step 6: Final answer
x = 591,740.07
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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.