Finding the Fourth Proportional to 549,857.57, 758,790.99 and 320,400.56
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Solution
The fourth proportional to 549,857.57, 758,790.99 and 320,400.56 is: 442,145.52
Step by Step Solution
- Step 1: Write the proportion equation
549,857.57 : 758,790.99 = 320,400.56 : x - Step 2: Convert to fraction form
549,857.57/758,790.99 = 320,400.56/x - Step 3: Cross multiply
549,857.57x = 758,790.99 × 320,400.56 - Step 4: Simplify right side
549,857.57x = 243,117,060,015.93 - Step 5: Solve for x
x = 243,117,060,015.93/549,857.57 - Step 6: Final answer
x = 442,145.52
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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.