Finding the Fourth Proportional to 887,124,650.70, 1,330,686,976.05 and 657,542,138.70
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Solution
The fourth proportional to 887,124,650.70, 1,330,686,976.05 and 657,542,138.70 is: 986,313,208.05
Step by Step Solution
- Step 1: Write the proportion equation
887,124,650.70 : 1,330,686,976.05 = 657,542,138.70 : x - Step 2: Convert to fraction form
887,124,650.70/1,330,686,976.05 = 657,542,138.70/x - Step 3: Cross multiply
887,124,650.70x = 1,330,686,976.05 × 657,542,138.70 - Step 4: Simplify right side
887,124,650.70x = 874,982,760,172,152,704 - Step 5: Solve for x
x = 874,982,760,172,152,704/887,124,650.70 - Step 6: Final answer
x = 986,313,208.05
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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.