Finding the Fourth Proportional to 901,218,851.26, 1,243,665,553.93 and 499,331,134.31
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Solution
The fourth proportional to 901,218,851.26, 1,243,665,553.93 and 499,331,134.31 is: 689,067,845.03
Step by Step Solution
- Step 1: Write the proportion equation
901,218,851.26 : 1,243,665,553.93 = 499,331,134.31 : x - Step 2: Convert to fraction form
901,218,851.26/1,243,665,553.93 = 499,331,134.31/x - Step 3: Cross multiply
901,218,851.26x = 1,243,665,553.93 × 499,331,134.31 - Step 4: Simplify right side
901,218,851.26x = 621,000,931,738,674,688 - Step 5: Solve for x
x = 621,000,931,738,674,688/901,218,851.26 - Step 6: Final answer
x = 689,067,845.03
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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.