Finding the Third Proportional to 668,413 and 1,391,905
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Solution
The third proportional to 668,413 and 1,391,905 is: 2,898,506.66
Step by Step Solution
- Step 1: Write the proportion equation
668,413 : 1,391,905 = 1,391,905 : x - Step 2: Convert to fraction form
668,413/1,391,905 = 1,391,905/x - Step 3: Cross multiply
668,413x = 1,391,905 × 1,391,905 - Step 4: Simplify right side
668,413x = 1,937,399,529,025 - Step 5: Solve for x
x = 1,937,399,529,025/668,413 - Step 6: Final answer
x = 2,898,506.66
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Why These Related Problems?
These problems maintain the same ratio (2.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.