Finding the Fourth Proportional to 921,664.64, 1,271,924.16 and 539,655.68
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Solution
The fourth proportional to 921,664.64, 1,271,924.16 and 539,655.68 is: 744,740.62
Step by Step Solution
- Step 1: Write the proportion equation
921,664.64 : 1,271,924.16 = 539,655.68 : x - Step 2: Convert to fraction form
921,664.64/1,271,924.16 = 539,655.68/x - Step 3: Cross multiply
921,664.64x = 1,271,924.16 × 539,655.68 - Step 4: Simplify right side
921,664.64x = 686,401,097,473.23 - Step 5: Solve for x
x = 686,401,097,473.23/921,664.64 - Step 6: Final answer
x = 744,740.62
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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.