Finding the Fourth Proportional to 1,362,890,878.90, 2,044,336,318.35 and 442,860,219.70
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Solution
The fourth proportional to 1,362,890,878.90, 2,044,336,318.35 and 442,860,219.70 is: 664,290,329.55
Step by Step Solution
- Step 1: Write the proportion equation
1,362,890,878.90 : 2,044,336,318.35 = 442,860,219.70 : x - Step 2: Convert to fraction form
1,362,890,878.90/2,044,336,318.35 = 442,860,219.70/x - Step 3: Cross multiply
1,362,890,878.90x = 2,044,336,318.35 × 442,860,219.70 - Step 4: Simplify right side
1,362,890,878.90x = 905,355,231,085,170,048 - Step 5: Solve for x
x = 905,355,231,085,170,048/1,362,890,878.90 - Step 6: Final answer
x = 664,290,329.55
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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.