Finding the Fourth Proportional to 557,687.38, 769,546.12 and 315,918.17
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Solution
The fourth proportional to 557,687.38, 769,546.12 and 315,918.17 is: 435,931.70
Step by Step Solution
- Step 1: Write the proportion equation
557,687.38 : 769,546.12 = 315,918.17 : x - Step 2: Convert to fraction form
557,687.38/769,546.12 = 315,918.17/x - Step 3: Cross multiply
557,687.38x = 769,546.12 × 315,918.17 - Step 4: Simplify right side
557,687.38x = 243,113,605,130.32 - Step 5: Solve for x
x = 243,113,605,130.32/557,687.38 - Step 6: Final answer
x = 435,931.70
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1.5x scale
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.