Finding the Fourth Proportional to 1,507,789.80, 2,080,765.98 and 819,461.70
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Solution
The fourth proportional to 1,507,789.80, 2,080,765.98 and 819,461.70 is: 1,130,865.87
Step by Step Solution
- Step 1: Write the proportion equation
1,507,789.80 : 2,080,765.98 = 819,461.70 : x - Step 2: Convert to fraction form
1,507,789.80/2,080,765.98 = 819,461.70/x - Step 3: Cross multiply
1,507,789.80x = 2,080,765.98 × 819,461.70 - Step 4: Simplify right side
1,507,789.80x = 1,705,108,027,272.97 - Step 5: Solve for x
x = 1,705,108,027,272.97/1,507,789.80 - Step 6: Final answer
x = 1,130,865.87
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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.