Finding the Fourth Proportional to 808,201,409.70, 1,212,302,114.55 and 614,491,165.20
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Solution
The fourth proportional to 808,201,409.70, 1,212,302,114.55 and 614,491,165.20 is: 921,736,747.80
Step by Step Solution
- Step 1: Write the proportion equation
808,201,409.70 : 1,212,302,114.55 = 614,491,165.20 : x - Step 2: Convert to fraction form
808,201,409.70/1,212,302,114.55 = 614,491,165.20/x - Step 3: Cross multiply
808,201,409.70x = 1,212,302,114.55 × 614,491,165.20 - Step 4: Simplify right side
808,201,409.70x = 744,948,938,944,253,440 - Step 5: Solve for x
x = 744,948,938,944,253,440/808,201,409.70 - Step 6: Final answer
x = 921,736,747.80
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Double scale
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Similar ratio
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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.