Finding the Fourth Proportional to 1,645,139.65, 2,270,277.16 and 919,979.05
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Solution
The fourth proportional to 1,645,139.65, 2,270,277.16 and 919,979.05 is: 1,269,562.39
Step by Step Solution
- Step 1: Write the proportion equation
1,645,139.65 : 2,270,277.16 = 919,979.05 : x - Step 2: Convert to fraction form
1,645,139.65/2,270,277.16 = 919,979.05/x - Step 3: Cross multiply
1,645,139.65x = 2,270,277.16 × 919,979.05 - Step 4: Simplify right side
1,645,139.65x = 2,088,607,424,893.50 - Step 5: Solve for x
x = 2,088,607,424,893.50/1,645,139.65 - Step 6: Final answer
x = 1,269,562.39
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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.