Finding the Fourth Proportional to 557,822.16, 769,781.52 and 312,790.68
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Solution
The fourth proportional to 557,822.16, 769,781.52 and 312,790.68 is: 431,643.81
Step by Step Solution
- Step 1: Write the proportion equation
557,822.16 : 769,781.52 = 312,790.68 : x - Step 2: Convert to fraction form
557,822.16/769,781.52 = 312,790.68/x - Step 3: Cross multiply
557,822.16x = 769,781.52 × 312,790.68 - Step 4: Simplify right side
557,822.16x = 240,780,485,092.23 - Step 5: Solve for x
x = 240,780,485,092.23/557,822.16 - Step 6: Final answer
x = 431,643.81
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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.