Finding the Fourth Proportional to 408,874.80, 613,895.40 and 309,730.80
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Solution
The fourth proportional to 408,874.80, 613,895.40 and 309,730.80 is: 465,037.99
Step by Step Solution
- Step 1: Write the proportion equation
408,874.80 : 613,895.40 = 309,730.80 : x - Step 2: Convert to fraction form
408,874.80/613,895.40 = 309,730.80/x - Step 3: Cross multiply
408,874.80x = 613,895.40 × 309,730.80 - Step 4: Simplify right side
408,874.80x = 190,142,313,358.32 - Step 5: Solve for x
x = 190,142,313,358.32/408,874.80 - Step 6: Final answer
x = 465,037.99
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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.