Finding the Fourth Proportional to 921,782.26, 1,272,064.80 and 513,910
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Solution
The fourth proportional to 921,782.26, 1,272,064.80 and 513,910 is: 709,198.74
Step by Step Solution
- Step 1: Write the proportion equation
921,782.26 : 1,272,064.80 = 513,910 : x - Step 2: Convert to fraction form
921,782.26/1,272,064.80 = 513,910/x - Step 3: Cross multiply
921,782.26x = 1,272,064.80 × 513,910 - Step 4: Simplify right side
921,782.26x = 653,726,821,368 - Step 5: Solve for x
x = 653,726,821,368/921,782.26 - Step 6: Final answer
x = 709,198.74
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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.