Finding the Fourth Proportional to 1,187,094,781.26, 1,780,122,540.69 and 487,106,677.62
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Solution
The fourth proportional to 1,187,094,781.26, 1,780,122,540.69 and 487,106,677.62 is: 730,446,793.50
Step by Step Solution
- Step 1: Write the proportion equation
1,187,094,781.26 : 1,780,122,540.69 = 487,106,677.62 : x - Step 2: Convert to fraction form
1,187,094,781.26/1,780,122,540.69 = 487,106,677.62/x - Step 3: Cross multiply
1,187,094,781.26x = 1,780,122,540.69 × 487,106,677.62 - Step 4: Simplify right side
1,187,094,781.26x = 867,109,576,551,979,136 - Step 5: Solve for x
x = 867,109,576,551,979,136/1,187,094,781.26 - Step 6: Final answer
x = 730,446,793.50
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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.