Finding the Fourth Proportional to 887,124,967.20, 1,330,687,450.80 and 657,542,455.20
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Solution
The fourth proportional to 887,124,967.20, 1,330,687,450.80 and 657,542,455.20 is: 986,313,682.80
Step by Step Solution
- Step 1: Write the proportion equation
887,124,967.20 : 1,330,687,450.80 = 657,542,455.20 : x - Step 2: Convert to fraction form
887,124,967.20/1,330,687,450.80 = 657,542,455.20/x - Step 3: Cross multiply
887,124,967.20x = 1,330,687,450.80 × 657,542,455.20 - Step 4: Simplify right side
887,124,967.20x = 874,983,493,502,861,184 - Step 5: Solve for x
x = 874,983,493,502,861,184/887,124,967.20 - Step 6: Final answer
x = 986,313,682.80
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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.