Finding the Fourth Proportional to 557,057.16, 768,657.78 and 318,547.08
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Solution
The fourth proportional to 557,057.16, 768,657.78 and 318,547.08 is: 439,548.59
Step by Step Solution
- Step 1: Write the proportion equation
557,057.16 : 768,657.78 = 318,547.08 : x - Step 2: Convert to fraction form
557,057.16/768,657.78 = 318,547.08/x - Step 3: Cross multiply
557,057.16x = 768,657.78 × 318,547.08 - Step 4: Simplify right side
557,057.16x = 244,853,691,338.28 - Step 5: Solve for x
x = 244,853,691,338.28/557,057.16 - Step 6: Final answer
x = 439,548.59
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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.