Finding the Fourth Proportional to 905,578.79, 1,249,617.38 and 497,676.15
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Solution
The fourth proportional to 905,578.79, 1,249,617.38 and 497,676.15 is: 686,748.38
Step by Step Solution
- Step 1: Write the proportion equation
905,578.79 : 1,249,617.38 = 497,676.15 : x - Step 2: Convert to fraction form
905,578.79/1,249,617.38 = 497,676.15/x - Step 3: Cross multiply
905,578.79x = 1,249,617.38 × 497,676.15 - Step 4: Simplify right side
905,578.79x = 621,904,764,163.11 - Step 5: Solve for x
x = 621,904,764,163.11/905,578.79 - Step 6: Final answer
x = 686,748.38
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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.