Finding the Fourth Proportional to 405,112,712.73, 559,056,110.84 and 219,473,728.42
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Solution
The fourth proportional to 405,112,712.73, 559,056,110.84 and 219,473,728.42 is: 302,874,052.55
Step by Step Solution
- Step 1: Write the proportion equation
405,112,712.73 : 559,056,110.84 = 219,473,728.42 : x - Step 2: Convert to fraction form
405,112,712.73/559,056,110.84 = 219,473,728.42/x - Step 3: Cross multiply
405,112,712.73x = 559,056,110.84 × 219,473,728.42 - Step 4: Simplify right side
405,112,712.73x = 122,698,129,042,039,584 - Step 5: Solve for x
x = 122,698,129,042,039,584/405,112,712.73 - Step 6: Final answer
x = 302,874,052.55
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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.