Finding the Fourth Proportional to 508,143.21, 699,477.21 and 439,201.08
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Solution
The fourth proportional to 508,143.21, 699,477.21 and 439,201.08 is: 604,575.91
Step by Step Solution
- Step 1: Write the proportion equation
508,143.21 : 699,477.21 = 439,201.08 : x - Step 2: Convert to fraction form
508,143.21/699,477.21 = 439,201.08/x - Step 3: Cross multiply
508,143.21x = 699,477.21 × 439,201.08 - Step 4: Simplify right side
508,143.21x = 307,211,146,067.39 - Step 5: Solve for x
x = 307,211,146,067.39/508,143.21 - Step 6: Final answer
x = 604,575.91
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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.