Finding the Fourth Proportional to 408,729,994.12, 613,192,605.90 and 136,103,123.08
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Solution
The fourth proportional to 408,729,994.12, 613,192,605.90 and 136,103,123.08 is: 204,187,189.37
Step by Step Solution
- Step 1: Write the proportion equation
408,729,994.12 : 613,192,605.90 = 136,103,123.08 : x - Step 2: Convert to fraction form
408,729,994.12/613,192,605.90 = 136,103,123.08/x - Step 3: Cross multiply
408,729,994.12x = 613,192,605.90 × 136,103,123.08 - Step 4: Simplify right side
408,729,994.12x = 83,457,428,712,553,632 - Step 5: Solve for x
x = 83,457,428,712,553,632/408,729,994.12 - Step 6: Final answer
x = 204,187,189.37
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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.