Finding the Fourth Proportional to 866,052,465.30, 1,299,078,697.95 and 720,650,207.70
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Solution
The fourth proportional to 866,052,465.30, 1,299,078,697.95 and 720,650,207.70 is: 1,080,975,311.55
Step by Step Solution
- Step 1: Write the proportion equation
866,052,465.30 : 1,299,078,697.95 = 720,650,207.70 : x - Step 2: Convert to fraction form
866,052,465.30/1,299,078,697.95 = 720,650,207.70/x - Step 3: Cross multiply
866,052,465.30x = 1,299,078,697.95 × 720,650,207.70 - Step 4: Simplify right side
866,052,465.30x = 936,181,333,496,313,216 - Step 5: Solve for x
x = 936,181,333,496,313,216/866,052,465.30 - Step 6: Final answer
x = 1,080,975,311.55
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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.