Finding the Fourth Proportional to 493,944.16, 681,392.40 and 312,350.08
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Solution
The fourth proportional to 493,944.16, 681,392.40 and 312,350.08 is: 430,884.68
Step by Step Solution
- Step 1: Write the proportion equation
493,944.16 : 681,392.40 = 312,350.08 : x - Step 2: Convert to fraction form
493,944.16/681,392.40 = 312,350.08/x - Step 3: Cross multiply
493,944.16x = 681,392.40 × 312,350.08 - Step 4: Simplify right side
493,944.16x = 212,832,970,651.39 - Step 5: Solve for x
x = 212,832,970,651.39/493,944.16 - Step 6: Final answer
x = 430,884.68
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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.