Finding the Fourth Proportional to 1,391,178.17, 1,919,791.24 and 779,326.87
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Solution
The fourth proportional to 1,391,178.17, 1,919,791.24 and 779,326.87 is: 1,075,451.68
Step by Step Solution
- Step 1: Write the proportion equation
1,391,178.17 : 1,919,791.24 = 779,326.87 : x - Step 2: Convert to fraction form
1,391,178.17/1,919,791.24 = 779,326.87/x - Step 3: Cross multiply
1,391,178.17x = 1,919,791.24 × 779,326.87 - Step 4: Simplify right side
1,391,178.17x = 1,496,144,898,122.62 - Step 5: Solve for x
x = 1,496,144,898,122.62/1,391,178.17 - Step 6: Final answer
x = 1,075,451.68
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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.