Finding the Fourth Proportional to 1,038,705.43, 1,558,260.11 and 398,962.14
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Solution
The fourth proportional to 1,038,705.43, 1,558,260.11 and 398,962.14 is: 598,520.78
Step by Step Solution
- Step 1: Write the proportion equation
1,038,705.43 : 1,558,260.11 = 398,962.14 : x - Step 2: Convert to fraction form
1,038,705.43/1,558,260.11 = 398,962.14/x - Step 3: Cross multiply
1,038,705.43x = 1,558,260.11 × 398,962.14 - Step 4: Simplify right side
1,038,705.43x = 621,686,788,162.24 - Step 5: Solve for x
x = 621,686,788,162.24/1,038,705.43 - Step 6: Final answer
x = 598,520.78
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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.