Finding the Fourth Proportional to 1,391,721.24, 1,920,542.70 and 818,798.28
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Solution
The fourth proportional to 1,391,721.24, 1,920,542.70 and 818,798.28 is: 1,129,922.44
Step by Step Solution
- Step 1: Write the proportion equation
1,391,721.24 : 1,920,542.70 = 818,798.28 : x - Step 2: Convert to fraction form
1,391,721.24/1,920,542.70 = 818,798.28/x - Step 3: Cross multiply
1,391,721.24x = 1,920,542.70 × 818,798.28 - Step 4: Simplify right side
1,391,721.24x = 1,572,537,059,426.56 - Step 5: Solve for x
x = 1,572,537,059,426.56/1,391,721.24 - Step 6: Final answer
x = 1,129,922.44
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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.