Finding the Fourth Proportional to 921,740.26, 1,272,006.84 and 513,868
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Solution
The fourth proportional to 921,740.26, 1,272,006.84 and 513,868 is: 709,140.78
Step by Step Solution
- Step 1: Write the proportion equation
921,740.26 : 1,272,006.84 = 513,868 : x - Step 2: Convert to fraction form
921,740.26/1,272,006.84 = 513,868/x - Step 3: Cross multiply
921,740.26x = 1,272,006.84 × 513,868 - Step 4: Simplify right side
921,740.26x = 653,643,610,857.12 - Step 5: Solve for x
x = 653,643,610,857.12/921,740.26 - Step 6: Final answer
x = 709,140.78
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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.