Finding the Fourth Proportional to 517,428,891.80, 776,143,337.70 and 415,392,219.80
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Solution
The fourth proportional to 517,428,891.80, 776,143,337.70 and 415,392,219.80 is: 623,088,329.70
Step by Step Solution
- Step 1: Write the proportion equation
517,428,891.80 : 776,143,337.70 = 415,392,219.80 : x - Step 2: Convert to fraction form
517,428,891.80/776,143,337.70 = 415,392,219.80/x - Step 3: Cross multiply
517,428,891.80x = 776,143,337.70 × 415,392,219.80 - Step 4: Simplify right side
517,428,891.80x = 322,403,903,930,184,064 - Step 5: Solve for x
x = 322,403,903,930,184,064/517,428,891.80 - Step 6: Final answer
x = 623,088,329.70
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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.