Finding the Fourth Proportional to 921,638.43, 1,271,842.81 and 513,715.93
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Solution
The fourth proportional to 921,638.43, 1,271,842.81 and 513,715.93 is: 708,917.83
Step by Step Solution
- Step 1: Write the proportion equation
921,638.43 : 1,271,842.81 = 513,715.93 : x - Step 2: Convert to fraction form
921,638.43/1,271,842.81 = 513,715.93/x - Step 3: Cross multiply
921,638.43x = 1,271,842.81 × 513,715.93 - Step 4: Simplify right side
921,638.43x = 653,365,917,532.83 - Step 5: Solve for x
x = 653,365,917,532.83/921,638.43 - Step 6: Final answer
x = 708,917.83
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.