Finding the Fourth Proportional to 1,391,434.19, 2,087,413.49 and 527,128.01
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Solution
The fourth proportional to 1,391,434.19, 2,087,413.49 and 527,128.01 is: 790,791.34
Step by Step Solution
- Step 1: Write the proportion equation
1,391,434.19 : 2,087,413.49 = 527,128.01 : x - Step 2: Convert to fraction form
1,391,434.19/2,087,413.49 = 527,128.01/x - Step 3: Cross multiply
1,391,434.19x = 2,087,413.49 × 527,128.01 - Step 4: Simplify right side
1,391,434.19x = 1,100,334,105,958.15 - Step 5: Solve for x
x = 1,100,334,105,958.15/1,391,434.19 - Step 6: Final answer
x = 790,791.34
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.