Finding the Fourth Proportional to 455,919.13, 683,878.70 and 123,495.13
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Solution
The fourth proportional to 455,919.13, 683,878.70 and 123,495.13 is: 185,242.70
Step by Step Solution
- Step 1: Write the proportion equation
455,919.13 : 683,878.70 = 123,495.13 : x - Step 2: Convert to fraction form
455,919.13/683,878.70 = 123,495.13/x - Step 3: Cross multiply
455,919.13x = 683,878.70 × 123,495.13 - Step 4: Simplify right side
455,919.13x = 84,455,688,960.73 - Step 5: Solve for x
x = 84,455,688,960.73/455,919.13 - Step 6: Final answer
x = 185,242.70
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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.