Finding the Fourth Proportional to 668,860,963.40, 1,004,047,272.30 and 396,385,257.80
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Solution
The fourth proportional to 668,860,963.40, 1,004,047,272.30 and 396,385,257.80 is: 595,025,810.52
Step by Step Solution
- Step 1: Write the proportion equation
668,860,963.40 : 1,004,047,272.30 = 396,385,257.80 : x - Step 2: Convert to fraction form
668,860,963.40/1,004,047,272.30 = 396,385,257.80/x - Step 3: Cross multiply
668,860,963.40x = 1,004,047,272.30 × 396,385,257.80 - Step 4: Simplify right side
668,860,963.40x = 397,989,536,874,022,272 - Step 5: Solve for x
x = 397,989,536,874,022,272/668,860,963.40 - Step 6: Final answer
x = 595,025,810.52
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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.