Finding the Fourth Proportional to 487,967.49, 673,639.34 and 306,779.20
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Solution
The fourth proportional to 487,967.49, 673,639.34 and 306,779.20 is: 423,508.82
Step by Step Solution
- Step 1: Write the proportion equation
487,967.49 : 673,639.34 = 306,779.20 : x - Step 2: Convert to fraction form
487,967.49/673,639.34 = 306,779.20/x - Step 3: Cross multiply
487,967.49x = 673,639.34 × 306,779.20 - Step 4: Simplify right side
487,967.49x = 206,658,534,595.73 - Step 5: Solve for x
x = 206,658,534,595.73/487,967.49 - Step 6: Final answer
x = 423,508.82
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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.