Finding the Fourth Proportional to 398,227,385.75, 549,379,452.86 and 379,764,377.96
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Solution
The fourth proportional to 398,227,385.75, 549,379,452.86 and 379,764,377.96 is: 523,908,585.00
Step by Step Solution
- Step 1: Write the proportion equation
398,227,385.75 : 549,379,452.86 = 379,764,377.96 : x - Step 2: Convert to fraction form
398,227,385.75/549,379,452.86 = 379,764,377.96/x - Step 3: Cross multiply
398,227,385.75x = 549,379,452.86 × 379,764,377.96 - Step 4: Simplify right side
398,227,385.75x = 208,634,746,174,737,312 - Step 5: Solve for x
x = 208,634,746,174,737,312/398,227,385.75 - Step 6: Final answer
x = 523,908,585.00
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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.