Finding the Fourth Proportional to 408,579,830.40, 612,869,745.60 and 255,398,851.20
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Solution
The fourth proportional to 408,579,830.40, 612,869,745.60 and 255,398,851.20 is: 383,098,276.80
Step by Step Solution
- Step 1: Write the proportion equation
408,579,830.40 : 612,869,745.60 = 255,398,851.20 : x - Step 2: Convert to fraction form
408,579,830.40/612,869,745.60 = 255,398,851.20/x - Step 3: Cross multiply
408,579,830.40x = 612,869,745.60 × 255,398,851.20 - Step 4: Simplify right side
408,579,830.40x = 156,526,228,961,476,256 - Step 5: Solve for x
x = 156,526,228,961,476,256/408,579,830.40 - Step 6: Final answer
x = 383,098,276.80
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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.