Finding the Fourth Proportional to 7,268,915.10, 10,903,372.65 and 7,128,947.10
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Solution
The fourth proportional to 7,268,915.10, 10,903,372.65 and 7,128,947.10 is: 10,693,420.65
Step by Step Solution
- Step 1: Write the proportion equation
7,268,915.10 : 10,903,372.65 = 7,128,947.10 : x - Step 2: Convert to fraction form
7,268,915.10/10,903,372.65 = 7,128,947.10/x - Step 3: Cross multiply
7,268,915.10x = 10,903,372.65 × 7,128,947.10 - Step 4: Simplify right side
7,268,915.10x = 77,729,566,833,436.81 - Step 5: Solve for x
x = 77,729,566,833,436.81/7,268,915.10 - Step 6: Final answer
x = 10,693,420.65
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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.