Finding the Fourth Proportional to 853,017,838.40, 1,279,526,757.60 and 707,615,580.80
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Solution
The fourth proportional to 853,017,838.40, 1,279,526,757.60 and 707,615,580.80 is: 1,061,423,371.20
Step by Step Solution
- Step 1: Write the proportion equation
853,017,838.40 : 1,279,526,757.60 = 707,615,580.80 : x - Step 2: Convert to fraction form
853,017,838.40/1,279,526,757.60 = 707,615,580.80/x - Step 3: Cross multiply
853,017,838.40x = 1,279,526,757.60 × 707,615,580.80 - Step 4: Simplify right side
853,017,838.40x = 905,413,069,728,264,704 - Step 5: Solve for x
x = 905,413,069,728,264,704/853,017,838.40 - Step 6: Final answer
x = 1,061,423,371.20
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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.