Finding the Fourth Proportional to 1,999,285.07, 2,756,143.71 and 1,425,328.79
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Solution
The fourth proportional to 1,999,285.07, 2,756,143.71 and 1,425,328.79 is: 1,964,907.87
Step by Step Solution
- Step 1: Write the proportion equation
1,999,285.07 : 2,756,143.71 = 1,425,328.79 : x - Step 2: Convert to fraction form
1,999,285.07/2,756,143.71 = 1,425,328.79/x - Step 3: Cross multiply
1,999,285.07x = 2,756,143.71 × 1,425,328.79 - Step 4: Simplify right side
1,999,285.07x = 3,928,410,965,459.69 - Step 5: Solve for x
x = 3,928,410,965,459.69/1,999,285.07 - Step 6: Final answer
x = 1,964,907.87
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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.