Finding the Fourth Proportional to 1,421,557.19, 1,961,719.98 and 776,982.00
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Solution
The fourth proportional to 1,421,557.19, 1,961,719.98 and 776,982.00 is: 1,072,219.34
Step by Step Solution
- Step 1: Write the proportion equation
1,421,557.19 : 1,961,719.98 = 776,982.00 : x - Step 2: Convert to fraction form
1,421,557.19/1,961,719.98 = 776,982.00/x - Step 3: Cross multiply
1,421,557.19x = 1,961,719.98 × 776,982.00 - Step 4: Simplify right side
1,421,557.19x = 1,524,221,113,464.24 - Step 5: Solve for x
x = 1,524,221,113,464.24/1,421,557.19 - Step 6: Final answer
x = 1,072,219.34
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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.