Finding the Fourth Proportional to 1,278,497.42, 1,916,397.84 and 425,340.56
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Solution
The fourth proportional to 1,278,497.42, 1,916,397.84 and 425,340.56 is: 637,562.28
Step by Step Solution
- Step 1: Write the proportion equation
1,278,497.42 : 1,916,397.84 = 425,340.56 : x - Step 2: Convert to fraction form
1,278,497.42/1,916,397.84 = 425,340.56/x - Step 3: Cross multiply
1,278,497.42x = 1,916,397.84 × 425,340.56 - Step 4: Simplify right side
1,278,497.42x = 815,121,730,448.39 - Step 5: Solve for x
x = 815,121,730,448.39/1,278,497.42 - Step 6: Final answer
x = 637,562.28
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.