Finding the Fourth Proportional to 663,552,441.80, 995,328,662.70 and 611,148,422.60
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Solution
The fourth proportional to 663,552,441.80, 995,328,662.70 and 611,148,422.60 is: 916,722,633.90
Step by Step Solution
- Step 1: Write the proportion equation
663,552,441.80 : 995,328,662.70 = 611,148,422.60 : x - Step 2: Convert to fraction form
663,552,441.80/995,328,662.70 = 611,148,422.60/x - Step 3: Cross multiply
663,552,441.80x = 995,328,662.70 × 611,148,422.60 - Step 4: Simplify right side
663,552,441.80x = 608,293,542,177,672,448 - Step 5: Solve for x
x = 608,293,542,177,672,448/663,552,441.80 - Step 6: Final answer
x = 916,722,633.90
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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.