Finding the Fourth Proportional to 979,201.80, 1,468,802.70 and 643,278.60
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Solution
The fourth proportional to 979,201.80, 1,468,802.70 and 643,278.60 is: 964,917.90
Step by Step Solution
- Step 1: Write the proportion equation
979,201.80 : 1,468,802.70 = 643,278.60 : x - Step 2: Convert to fraction form
979,201.80/1,468,802.70 = 643,278.60/x - Step 3: Cross multiply
979,201.80x = 1,468,802.70 × 643,278.60 - Step 4: Simplify right side
979,201.80x = 944,849,344,532.22 - Step 5: Solve for x
x = 944,849,344,532.22/979,201.80 - Step 6: Final answer
x = 964,917.90
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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.