Finding the Fourth Proportional to 752,319.48, 1,128,673.62 and 279,139.80
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Solution
The fourth proportional to 752,319.48, 1,128,673.62 and 279,139.80 is: 418,781.83
Step by Step Solution
- Step 1: Write the proportion equation
752,319.48 : 1,128,673.62 = 279,139.80 : x - Step 2: Convert to fraction form
752,319.48/1,128,673.62 = 279,139.80/x - Step 3: Cross multiply
752,319.48x = 1,128,673.62 × 279,139.80 - Step 4: Simplify right side
752,319.48x = 315,057,728,552.08 - Step 5: Solve for x
x = 315,057,728,552.08/752,319.48 - Step 6: Final answer
x = 418,781.83
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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.