Finding the Fourth Proportional to 1,122,912,136.10, 1,684,368,204.15 and 395,974,331.30
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Solution
The fourth proportional to 1,122,912,136.10, 1,684,368,204.15 and 395,974,331.30 is: 593,961,496.95
Step by Step Solution
- Step 1: Write the proportion equation
1,122,912,136.10 : 1,684,368,204.15 = 395,974,331.30 : x - Step 2: Convert to fraction form
1,122,912,136.10/1,684,368,204.15 = 395,974,331.30/x - Step 3: Cross multiply
1,122,912,136.10x = 1,684,368,204.15 × 395,974,331.30 - Step 4: Simplify right side
1,122,912,136.10x = 666,966,573,301,278,208 - Step 5: Solve for x
x = 666,966,573,301,278,208/1,122,912,136.10 - Step 6: Final answer
x = 593,961,496.95
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Double scale
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Similar ratio
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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.