Finding the Fourth Proportional to 1,428,552.36, 1,971,417.18 and 784,014.12
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Solution
The fourth proportional to 1,428,552.36, 1,971,417.18 and 784,014.12 is: 1,081,947.68
Step by Step Solution
- Step 1: Write the proportion equation
1,428,552.36 : 1,971,417.18 = 784,014.12 : x - Step 2: Convert to fraction form
1,428,552.36/1,971,417.18 = 784,014.12/x - Step 3: Cross multiply
1,428,552.36x = 1,971,417.18 × 784,014.12 - Step 4: Simplify right side
1,428,552.36x = 1,545,618,905,530.58 - Step 5: Solve for x
x = 1,545,618,905,530.58/1,428,552.36 - Step 6: Final answer
x = 1,081,947.68
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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.