Finding the Fourth Proportional to 557,515.08, 769,346.16 and 315,792.79
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Solution
The fourth proportional to 557,515.08, 769,346.16 and 315,792.79 is: 435,780.09
Step by Step Solution
- Step 1: Write the proportion equation
557,515.08 : 769,346.16 = 315,792.79 : x - Step 2: Convert to fraction form
557,515.08/769,346.16 = 315,792.79/x - Step 3: Cross multiply
557,515.08x = 769,346.16 × 315,792.79 - Step 4: Simplify right side
557,515.08x = 242,953,970,342.19 - Step 5: Solve for x
x = 242,953,970,342.19/557,515.08 - Step 6: Final answer
x = 435,780.09
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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.