Finding the Fourth Proportional to 956,672,409.08, 1,320,207,913.55 and 516,639,261.08
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Solution
The fourth proportional to 956,672,409.08, 1,320,207,913.55 and 516,639,261.08 is: 712,962,174.36
Step by Step Solution
- Step 1: Write the proportion equation
956,672,409.08 : 1,320,207,913.55 = 516,639,261.08 : x - Step 2: Convert to fraction form
956,672,409.08/1,320,207,913.55 = 516,639,261.08/x - Step 3: Cross multiply
956,672,409.08x = 1,320,207,913.55 × 516,639,261.08 - Step 4: Simplify right side
956,672,409.08x = 682,071,240,923,131,008 - Step 5: Solve for x
x = 682,071,240,923,131,008/956,672,409.08 - Step 6: Final answer
x = 712,962,174.36
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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.