Finding the Fourth Proportional to 519,051,702.40, 779,018,452.80 and 212,563,772.80
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Solution
The fourth proportional to 519,051,702.40, 779,018,452.80 and 212,563,772.80 is: 319,026,217.70
Step by Step Solution
- Step 1: Write the proportion equation
519,051,702.40 : 779,018,452.80 = 212,563,772.80 : x - Step 2: Convert to fraction form
519,051,702.40/779,018,452.80 = 212,563,772.80/x - Step 3: Cross multiply
519,051,702.40x = 779,018,452.80 × 212,563,772.80 - Step 4: Simplify right side
519,051,702.40x = 165,591,101,407,986,720 - Step 5: Solve for x
x = 165,591,101,407,986,720/519,051,702.40 - Step 6: Final answer
x = 319,026,217.70
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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.