Finding the Fourth Proportional to 689,617.87, 1,034,416.41 and 310,270.70
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Solution
The fourth proportional to 689,617.87, 1,034,416.41 and 310,270.70 is: 465,401.38
Step by Step Solution
- Step 1: Write the proportion equation
689,617.87 : 1,034,416.41 = 310,270.70 : x - Step 2: Convert to fraction form
689,617.87/1,034,416.41 = 310,270.70/x - Step 3: Cross multiply
689,617.87x = 1,034,416.41 × 310,270.70 - Step 4: Simplify right side
689,617.87x = 320,949,105,044.71 - Step 5: Solve for x
x = 320,949,105,044.71/689,617.87 - Step 6: Final answer
x = 465,401.38
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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.