Finding the Fourth Proportional to 919,542,423.70, 1,379,313,635.55 and 819,773,233.30
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Solution
The fourth proportional to 919,542,423.70, 1,379,313,635.55 and 819,773,233.30 is: 1,229,659,849.95
Step by Step Solution
- Step 1: Write the proportion equation
919,542,423.70 : 1,379,313,635.55 = 819,773,233.30 : x - Step 2: Convert to fraction form
919,542,423.70/1,379,313,635.55 = 819,773,233.30/x - Step 3: Cross multiply
919,542,423.70x = 1,379,313,635.55 × 819,773,233.30 - Step 4: Simplify right side
919,542,423.70x = 1,130,724,398,749,601,280 - Step 5: Solve for x
x = 1,130,724,398,749,601,280/919,542,423.70 - Step 6: Final answer
x = 1,229,659,849.95
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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.