Finding the Fourth Proportional to 821,930.74, 1,133,944.05 and 515,828.50
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Solution
The fourth proportional to 821,930.74, 1,133,944.05 and 515,828.50 is: 711,642.27
Step by Step Solution
- Step 1: Write the proportion equation
821,930.74 : 1,133,944.05 = 515,828.50 : x - Step 2: Convert to fraction form
821,930.74/1,133,944.05 = 515,828.50/x - Step 3: Cross multiply
821,930.74x = 1,133,944.05 × 515,828.50 - Step 4: Simplify right side
821,930.74x = 584,920,658,395.43 - Step 5: Solve for x
x = 584,920,658,395.43/821,930.74 - Step 6: Final answer
x = 711,642.27
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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.