Finding the Fourth Proportional to 1,031,346.05, 1,423,230.21 and 572,459.31
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Solution
The fourth proportional to 1,031,346.05, 1,423,230.21 and 572,459.31 is: 789,978.68
Step by Step Solution
- Step 1: Write the proportion equation
1,031,346.05 : 1,423,230.21 = 572,459.31 : x - Step 2: Convert to fraction form
1,031,346.05/1,423,230.21 = 572,459.31/x - Step 3: Cross multiply
1,031,346.05x = 1,423,230.21 × 572,459.31 - Step 4: Simplify right side
1,031,346.05x = 814,741,383,987.76 - Step 5: Solve for x
x = 814,741,383,987.76/1,031,346.05 - Step 6: Final answer
x = 789,978.68
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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.