Finding the Fourth Proportional to 921,636, 1,271,857.68 and 497,700
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Solution
The fourth proportional to 921,636, 1,271,857.68 and 497,700 is: 686,826
Step by Step Solution
- Step 1: Write the proportion equation
921,636 : 1,271,857.68 = 497,700 : x - Step 2: Convert to fraction form
921,636/1,271,857.68 = 497,700/x - Step 3: Cross multiply
921,636x = 1,271,857.68 × 497,700 - Step 4: Simplify right side
921,636x = 633,003,567,336 - Step 5: Solve for x
x = 633,003,567,336/921,636 - Step 6: Final answer
x = 686,826
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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.