Finding the Fourth Proportional to 409,792.32, 613,697.76 and 339,151.68
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Solution
The fourth proportional to 409,792.32, 613,697.76 and 339,151.68 is: 507,907.58
Step by Step Solution
- Step 1: Write the proportion equation
409,792.32 : 613,697.76 = 339,151.68 : x - Step 2: Convert to fraction form
409,792.32/613,697.76 = 339,151.68/x - Step 3: Cross multiply
409,792.32x = 613,697.76 × 339,151.68 - Step 4: Simplify right side
409,792.32x = 208,136,626,316.24 - Step 5: Solve for x
x = 208,136,626,316.24/409,792.32 - Step 6: Final answer
x = 507,907.58
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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.