Finding the Fourth Proportional to 905,461,330.05, 1,358,191,995.08 and 905,461,330.05
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Solution
The fourth proportional to 905,461,330.05, 1,358,191,995.08 and 905,461,330.05 is: 1,358,191,995.08
Step by Step Solution
- Step 1: Write the proportion equation
905,461,330.05 : 1,358,191,995.08 = 905,461,330.05 : x - Step 2: Convert to fraction form
905,461,330.05/1,358,191,995.08 = 905,461,330.05/x - Step 3: Cross multiply
905,461,330.05x = 1,358,191,995.08 × 905,461,330.05 - Step 4: Simplify right side
905,461,330.05x = 1,229,790,330,323,872,512 - Step 5: Solve for x
x = 1,229,790,330,323,872,512/905,461,330.05 - Step 6: Final answer
x = 1,358,191,995.08
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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.