Finding the Fourth Proportional to 1,001,399.16, 1,381,986.18 and 571,817.28
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Solution
The fourth proportional to 1,001,399.16, 1,381,986.18 and 571,817.28 is: 789,139.45
Step by Step Solution
- Step 1: Write the proportion equation
1,001,399.16 : 1,381,986.18 = 571,817.28 : x - Step 2: Convert to fraction form
1,001,399.16/1,381,986.18 = 571,817.28/x - Step 3: Cross multiply
1,001,399.16x = 1,381,986.18 × 571,817.28 - Step 4: Simplify right side
1,001,399.16x = 790,243,578,445.19 - Step 5: Solve for x
x = 790,243,578,445.19/1,001,399.16 - Step 6: Final answer
x = 789,139.45
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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.