Finding the Fourth Proportional to 528,642.13, 729,194.21 and 313,629.97
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Solution
The fourth proportional to 528,642.13, 729,194.21 and 313,629.97 is: 432,612.43
Step by Step Solution
- Step 1: Write the proportion equation
528,642.13 : 729,194.21 = 313,629.97 : x - Step 2: Convert to fraction form
528,642.13/729,194.21 = 313,629.97/x - Step 3: Cross multiply
528,642.13x = 729,194.21 × 313,629.97 - Step 4: Simplify right side
528,642.13x = 228,697,155,344.58 - Step 5: Solve for x
x = 228,697,155,344.58/528,642.13 - Step 6: Final answer
x = 432,612.43
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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.