Finding the Fourth Proportional to 812,805.96, 1,219,996.26 and 392,377.08
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Solution
The fourth proportional to 812,805.96, 1,219,996.26 and 392,377.08 is: 588,945.69
Step by Step Solution
- Step 1: Write the proportion equation
812,805.96 : 1,219,996.26 = 392,377.08 : x - Step 2: Convert to fraction form
812,805.96/1,219,996.26 = 392,377.08/x - Step 3: Cross multiply
812,805.96x = 1,219,996.26 × 392,377.08 - Step 4: Simplify right side
812,805.96x = 478,698,570,109.72 - Step 5: Solve for x
x = 478,698,570,109.72/812,805.96 - Step 6: Final answer
x = 588,945.69
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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.