Finding the Fourth Proportional to 890,383,423.20, 1,335,575,134.80 and 657,931,129.80
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Solution
The fourth proportional to 890,383,423.20, 1,335,575,134.80 and 657,931,129.80 is: 986,896,694.70
Step by Step Solution
- Step 1: Write the proportion equation
890,383,423.20 : 1,335,575,134.80 = 657,931,129.80 : x - Step 2: Convert to fraction form
890,383,423.20/1,335,575,134.80 = 657,931,129.80/x - Step 3: Cross multiply
890,383,423.20x = 1,335,575,134.80 × 657,931,129.80 - Step 4: Simplify right side
890,383,423.20x = 878,716,457,371,751,168 - Step 5: Solve for x
x = 878,716,457,371,751,168/890,383,423.20 - Step 6: Final answer
x = 986,896,694.70
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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.