Finding the Fourth Proportional to 1,421,560.19, 1,961,724.12 and 776,985
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Solution
The fourth proportional to 1,421,560.19, 1,961,724.12 and 776,985 is: 1,072,223.48
Step by Step Solution
- Step 1: Write the proportion equation
1,421,560.19 : 1,961,724.12 = 776,985 : x - Step 2: Convert to fraction form
1,421,560.19/1,961,724.12 = 776,985/x - Step 3: Cross multiply
1,421,560.19x = 1,961,724.12 × 776,985 - Step 4: Simplify right side
1,421,560.19x = 1,524,230,215,378.20 - Step 5: Solve for x
x = 1,524,230,215,378.20/1,421,560.19 - Step 6: Final answer
x = 1,072,223.48
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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.