Finding the Fourth Proportional to 561,815,999.80, 842,723,999.70 and 289,718,207.80
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Solution
The fourth proportional to 561,815,999.80, 842,723,999.70 and 289,718,207.80 is: 434,577,311.70
Step by Step Solution
- Step 1: Write the proportion equation
561,815,999.80 : 842,723,999.70 = 289,718,207.80 : x - Step 2: Convert to fraction form
561,815,999.80/842,723,999.70 = 289,718,207.80/x - Step 3: Cross multiply
561,815,999.80x = 842,723,999.70 × 289,718,207.80 - Step 4: Simplify right side
561,815,999.80x = 244,152,486,863,131,776 - Step 5: Solve for x
x = 244,152,486,863,131,776/561,815,999.80 - Step 6: Final answer
x = 434,577,311.70
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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.