Finding the Fourth Proportional to 861,145.84, 1,291,806.78 and 329,114.62
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Solution
The fourth proportional to 861,145.84, 1,291,806.78 and 329,114.62 is: 493,705.57
Step by Step Solution
- Step 1: Write the proportion equation
861,145.84 : 1,291,806.78 = 329,114.62 : x - Step 2: Convert to fraction form
861,145.84/1,291,806.78 = 329,114.62/x - Step 3: Cross multiply
861,145.84x = 1,291,806.78 × 329,114.62 - Step 4: Simplify right side
861,145.84x = 425,152,497,513.12 - Step 5: Solve for x
x = 425,152,497,513.12/861,145.84 - Step 6: Final answer
x = 493,705.57
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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.