Finding the Fourth Proportional to 513,650.09, 709,122.18 and 309,752.66
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Solution
The fourth proportional to 513,650.09, 709,122.18 and 309,752.66 is: 427,630.56
Step by Step Solution
- Step 1: Write the proportion equation
513,650.09 : 709,122.18 = 309,752.66 : x - Step 2: Convert to fraction form
513,650.09/709,122.18 = 309,752.66/x - Step 3: Cross multiply
513,650.09x = 709,122.18 × 309,752.66 - Step 4: Simplify right side
513,650.09x = 219,652,478,723.21 - Step 5: Solve for x
x = 219,652,478,723.21/513,650.09 - Step 6: Final answer
x = 427,630.56
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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.