Finding the Fourth Proportional to 1,207,267,234.80, 1,810,900,852.20 and 441,660,937.20
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Solution
The fourth proportional to 1,207,267,234.80, 1,810,900,852.20 and 441,660,937.20 is: 662,491,405.80
Step by Step Solution
- Step 1: Write the proportion equation
1,207,267,234.80 : 1,810,900,852.20 = 441,660,937.20 : x - Step 2: Convert to fraction form
1,207,267,234.80/1,810,900,852.20 = 441,660,937.20/x - Step 3: Cross multiply
1,207,267,234.80x = 1,810,900,852.20 × 441,660,937.20 - Step 4: Simplify right side
1,207,267,234.80x = 799,804,167,558,930,688 - Step 5: Solve for x
x = 799,804,167,558,930,688/1,207,267,234.80 - Step 6: Final answer
x = 662,491,405.80
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Double scale
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Similar ratio
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1.5x scale
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.