Finding the Fourth Proportional to 720,487.80, 1,080,731.70 and 221,851.80
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Solution
The fourth proportional to 720,487.80, 1,080,731.70 and 221,851.80 is: 332,777.70
Step by Step Solution
- Step 1: Write the proportion equation
720,487.80 : 1,080,731.70 = 221,851.80 : x - Step 2: Convert to fraction form
720,487.80/1,080,731.70 = 221,851.80/x - Step 3: Cross multiply
720,487.80x = 1,080,731.70 × 221,851.80 - Step 4: Simplify right side
720,487.80x = 239,762,272,962.06 - Step 5: Solve for x
x = 239,762,272,962.06/720,487.80 - Step 6: Final answer
x = 332,777.70
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.