Finding the Fourth Proportional to 517,428,793.80, 776,143,190.70 and 415,392,121.80
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Solution
The fourth proportional to 517,428,793.80, 776,143,190.70 and 415,392,121.80 is: 623,088,182.70
Step by Step Solution
- Step 1: Write the proportion equation
517,428,793.80 : 776,143,190.70 = 415,392,121.80 : x - Step 2: Convert to fraction form
517,428,793.80/776,143,190.70 = 415,392,121.80/x - Step 3: Cross multiply
517,428,793.80x = 776,143,190.70 × 415,392,121.80 - Step 4: Simplify right side
517,428,793.80x = 322,403,766,805,495,040 - Step 5: Solve for x
x = 322,403,766,805,495,040/517,428,793.80 - Step 6: Final answer
x = 623,088,182.70
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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.