Finding the Fourth Proportional to 747,609.72, 1,031,705.90 and 408,070.68
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Solution
The fourth proportional to 747,609.72, 1,031,705.90 and 408,070.68 is: 563,139.99
Step by Step Solution
- Step 1: Write the proportion equation
747,609.72 : 1,031,705.90 = 408,070.68 : x - Step 2: Convert to fraction form
747,609.72/1,031,705.90 = 408,070.68/x - Step 3: Cross multiply
747,609.72x = 1,031,705.90 × 408,070.68 - Step 4: Simplify right side
747,609.72x = 421,008,928,173.01 - Step 5: Solve for x
x = 421,008,928,173.01/747,609.72 - Step 6: Final answer
x = 563,139.99
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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.