Finding the Fourth Proportional to 409,451,899.80, 614,177,849.70 and 133,102,579.80
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Solution
The fourth proportional to 409,451,899.80, 614,177,849.70 and 133,102,579.80 is: 199,653,869.70
Step by Step Solution
- Step 1: Write the proportion equation
409,451,899.80 : 614,177,849.70 = 133,102,579.80 : x - Step 2: Convert to fraction form
409,451,899.80/614,177,849.70 = 133,102,579.80/x - Step 3: Cross multiply
409,451,899.80x = 614,177,849.70 × 133,102,579.80 - Step 4: Simplify right side
409,451,899.80x = 81,748,656,251,086,656 - Step 5: Solve for x
x = 81,748,656,251,086,656/409,451,899.80 - Step 6: Final answer
x = 199,653,869.70
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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.