Finding the Fourth Proportional to 411,739,912.80, 617,629,731.12 and 135,385,008.48
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Solution
The fourth proportional to 411,739,912.80, 617,629,731.12 and 135,385,008.48 is: 203,084,043.56
Step by Step Solution
- Step 1: Write the proportion equation
411,739,912.80 : 617,629,731.12 = 135,385,008.48 : x - Step 2: Convert to fraction form
411,739,912.80/617,629,731.12 = 135,385,008.48/x - Step 3: Cross multiply
411,739,912.80x = 617,629,731.12 × 135,385,008.48 - Step 4: Simplify right side
411,739,912.80x = 83,617,806,385,181,312 - Step 5: Solve for x
x = 83,617,806,385,181,312/411,739,912.80 - Step 6: Final answer
x = 203,084,043.56
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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.