Finding the Fourth Proportional to 823,574.08, 1,135,733.73 and 642,219.84
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Solution
The fourth proportional to 823,574.08, 1,135,733.73 and 642,219.84 is: 885,640.71
Step by Step Solution
- Step 1: Write the proportion equation
823,574.08 : 1,135,733.73 = 642,219.84 : x - Step 2: Convert to fraction form
823,574.08/1,135,733.73 = 642,219.84/x - Step 3: Cross multiply
823,574.08x = 1,135,733.73 × 642,219.84 - Step 4: Simplify right side
823,574.08x = 729,390,734,363.20 - Step 5: Solve for x
x = 729,390,734,363.20/823,574.08 - Step 6: Final answer
x = 885,640.71
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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.