Finding the Fourth Proportional to 665,943,616.80, 998,915,425.20 and 654,464,491.20
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Solution
The fourth proportional to 665,943,616.80, 998,915,425.20 and 654,464,491.20 is: 981,696,736.80
Step by Step Solution
- Step 1: Write the proportion equation
665,943,616.80 : 998,915,425.20 = 654,464,491.20 : x - Step 2: Convert to fraction form
665,943,616.80/998,915,425.20 = 654,464,491.20/x - Step 3: Cross multiply
665,943,616.80x = 998,915,425.20 × 654,464,491.20 - Step 4: Simplify right side
665,943,616.80x = 653,754,675,505,349,760 - Step 5: Solve for x
x = 653,754,675,505,349,760/665,943,616.80 - Step 6: Final answer
x = 981,696,736.80
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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.