Finding the Fourth Proportional to 1,920,123,079.80, 2,880,184,619.70 and 1,436,393,671.80
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Solution
The fourth proportional to 1,920,123,079.80, 2,880,184,619.70 and 1,436,393,671.80 is: 2,154,590,507.70
Step by Step Solution
- Step 1: Write the proportion equation
1,920,123,079.80 : 2,880,184,619.70 = 1,436,393,671.80 : x - Step 2: Convert to fraction form
1,920,123,079.80/2,880,184,619.70 = 1,436,393,671.80/x - Step 3: Cross multiply
1,920,123,079.80x = 2,880,184,619.70 × 1,436,393,671.80 - Step 4: Simplify right side
1,920,123,079.80x = 4,137,078,961,352,769,024 - Step 5: Solve for x
x = 4,137,078,961,352,769,024/1,920,123,079.80 - Step 6: Final answer
x = 2,154,590,507.70
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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.