Finding the Fourth Proportional to 455,448,162.63, 628,048,712.38 and 389,586,699.75
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Solution
The fourth proportional to 455,448,162.63, 628,048,712.38 and 389,586,699.75 is: 537,227,823.53
Step by Step Solution
- Step 1: Write the proportion equation
455,448,162.63 : 628,048,712.38 = 389,586,699.75 : x - Step 2: Convert to fraction form
455,448,162.63/628,048,712.38 = 389,586,699.75/x - Step 3: Cross multiply
455,448,162.63x = 628,048,712.38 × 389,586,699.75 - Step 4: Simplify right side
455,448,162.63x = 244,679,425,138,361,152 - Step 5: Solve for x
x = 244,679,425,138,361,152/455,448,162.63 - Step 6: Final answer
x = 537,227,823.53
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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.