Finding the Fourth Proportional to 979,386.03, 1,352,088.99 and 685,488.09
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Solution
The fourth proportional to 979,386.03, 1,352,088.99 and 685,488.09 is: 946,348.91
Step by Step Solution
- Step 1: Write the proportion equation
979,386.03 : 1,352,088.99 = 685,488.09 : x - Step 2: Convert to fraction form
979,386.03/1,352,088.99 = 685,488.09/x - Step 3: Cross multiply
979,386.03x = 1,352,088.99 × 685,488.09 - Step 4: Simplify right side
979,386.03x = 926,840,899,265.13 - Step 5: Solve for x
x = 926,840,899,265.13/979,386.03 - Step 6: Final answer
x = 946,348.91
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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.