Finding the Fourth Proportional to 716,685.42, 989,026.05 and 394,395.53
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Solution
The fourth proportional to 716,685.42, 989,026.05 and 394,395.53 is: 544,265.92
Step by Step Solution
- Step 1: Write the proportion equation
716,685.42 : 989,026.05 = 394,395.53 : x - Step 2: Convert to fraction form
716,685.42/989,026.05 = 394,395.53/x - Step 3: Cross multiply
716,685.42x = 989,026.05 × 394,395.53 - Step 4: Simplify right side
716,685.42x = 390,067,448,228.43 - Step 5: Solve for x
x = 390,067,448,228.43/716,685.42 - Step 6: Final answer
x = 544,265.92
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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.