Finding the Fourth Proportional to 687,998,434.70, 965,918,786.50 and 687,998,434.70
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Solution
The fourth proportional to 687,998,434.70, 965,918,786.50 and 687,998,434.70 is: 965,918,786.50
Step by Step Solution
- Step 1: Write the proportion equation
687,998,434.70 : 965,918,786.50 = 687,998,434.70 : x - Step 2: Convert to fraction form
687,998,434.70/965,918,786.50 = 687,998,434.70/x - Step 3: Cross multiply
687,998,434.70x = 965,918,786.50 × 687,998,434.70 - Step 4: Simplify right side
687,998,434.70x = 664,550,613,159,323,520 - Step 5: Solve for x
x = 664,550,613,159,323,520/687,998,434.70 - Step 6: Final answer
x = 965,918,786.50
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.