Finding the Fourth Proportional to 1,387,220.80, 2,080,888.80 and 440,564.80
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Solution
The fourth proportional to 1,387,220.80, 2,080,888.80 and 440,564.80 is: 660,865.49
Step by Step Solution
- Step 1: Write the proportion equation
1,387,220.80 : 2,080,888.80 = 440,564.80 : x - Step 2: Convert to fraction form
1,387,220.80/2,080,888.80 = 440,564.80/x - Step 3: Cross multiply
1,387,220.80x = 2,080,888.80 × 440,564.80 - Step 4: Simplify right side
1,387,220.80x = 916,766,357,994.24 - Step 5: Solve for x
x = 916,766,357,994.24/1,387,220.80 - Step 6: Final answer
x = 660,865.49
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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.