Finding the Fourth Proportional to 7,043,726.40, 10,565,589.60 and 2,555,419.20
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Solution
The fourth proportional to 7,043,726.40, 10,565,589.60 and 2,555,419.20 is: 3,833,128.80
Step by Step Solution
- Step 1: Write the proportion equation
7,043,726.40 : 10,565,589.60 = 2,555,419.20 : x - Step 2: Convert to fraction form
7,043,726.40/10,565,589.60 = 2,555,419.20/x - Step 3: Cross multiply
7,043,726.40x = 10,565,589.60 × 2,555,419.20 - Step 4: Simplify right side
7,043,726.40x = 26,999,510,523,160.32 - Step 5: Solve for x
x = 26,999,510,523,160.32/7,043,726.40 - Step 6: Final answer
x = 3,833,128.80
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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.