Finding the Fourth Proportional to 921,636.33, 1,271,864.12 and 513,764.07
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Solution
The fourth proportional to 921,636.33, 1,271,864.12 and 513,764.07 is: 708,997.75
Step by Step Solution
- Step 1: Write the proportion equation
921,636.33 : 1,271,864.12 = 513,764.07 : x - Step 2: Convert to fraction form
921,636.33/1,271,864.12 = 513,764.07/x - Step 3: Cross multiply
921,636.33x = 1,271,864.12 × 513,764.07 - Step 4: Simplify right side
921,636.33x = 653,438,086,778.17 - Step 5: Solve for x
x = 653,438,086,778.17/921,636.33 - Step 6: Final answer
x = 708,997.75
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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.