Finding the Fourth Proportional to 1,387,017.14, 1,913,542.99 and 870,469.61
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Solution
The fourth proportional to 1,387,017.14, 1,913,542.99 and 870,469.61 is: 1,200,908.75
Step by Step Solution
- Step 1: Write the proportion equation
1,387,017.14 : 1,913,542.99 = 870,469.61 : x - Step 2: Convert to fraction form
1,387,017.14/1,913,542.99 = 870,469.61/x - Step 3: Cross multiply
1,387,017.14x = 1,913,542.99 × 870,469.61 - Step 4: Simplify right side
1,387,017.14x = 1,665,681,008,479.65 - Step 5: Solve for x
x = 1,665,681,008,479.65/1,387,017.14 - Step 6: Final answer
x = 1,200,908.75
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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.