Finding the Fourth Proportional to 425,787,943.51, 638,677,659.12 and 134,655,115.87
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Solution
The fourth proportional to 425,787,943.51, 638,677,659.12 and 134,655,115.87 is: 201,981,327.80
Step by Step Solution
- Step 1: Write the proportion equation
425,787,943.51 : 638,677,659.12 = 134,655,115.87 : x - Step 2: Convert to fraction form
425,787,943.51/638,677,659.12 = 134,655,115.87/x - Step 3: Cross multiply
425,787,943.51x = 638,677,659.12 × 134,655,115.87 - Step 4: Simplify right side
425,787,943.51x = 86,001,214,192,383,968 - Step 5: Solve for x
x = 86,001,214,192,383,968/425,787,943.51 - Step 6: Final answer
x = 201,981,327.80
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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.