Finding the Fourth Proportional to 639,040,230.70, 881,808,307.69 and 371,063,680.62
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Solution
The fourth proportional to 639,040,230.70, 881,808,307.69 and 371,063,680.62 is: 512,028,852.85
Step by Step Solution
- Step 1: Write the proportion equation
639,040,230.70 : 881,808,307.69 = 371,063,680.62 : x - Step 2: Convert to fraction form
639,040,230.70/881,808,307.69 = 371,063,680.62/x - Step 3: Cross multiply
639,040,230.70x = 881,808,307.69 × 371,063,680.62 - Step 4: Simplify right side
639,040,230.70x = 327,207,036,254,197,632 - Step 5: Solve for x
x = 327,207,036,254,197,632/639,040,230.70 - Step 6: Final answer
x = 512,028,852.85
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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.