Finding the Fourth Proportional to 901,218,852.26, 1,243,665,555.31 and 499,331,135.31
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Solution
The fourth proportional to 901,218,852.26, 1,243,665,555.31 and 499,331,135.31 is: 689,067,846.42
Step by Step Solution
- Step 1: Write the proportion equation
901,218,852.26 : 1,243,665,555.31 = 499,331,135.31 : x - Step 2: Convert to fraction form
901,218,852.26/1,243,665,555.31 = 499,331,135.31/x - Step 3: Cross multiply
901,218,852.26x = 1,243,665,555.31 × 499,331,135.31 - Step 4: Simplify right side
901,218,852.26x = 621,000,933,678,883,840 - Step 5: Solve for x
x = 621,000,933,678,883,840/901,218,852.26 - Step 6: Final answer
x = 689,067,846.42
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.