Finding the Fourth Proportional to 920,013.90, 1,269,605.58 and 512,115.14
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Solution
The fourth proportional to 920,013.90, 1,269,605.58 and 512,115.14 is: 706,711.32
Step by Step Solution
- Step 1: Write the proportion equation
920,013.90 : 1,269,605.58 = 512,115.14 : x - Step 2: Convert to fraction form
920,013.90/1,269,605.58 = 512,115.14/x - Step 3: Cross multiply
920,013.90x = 1,269,605.58 × 512,115.14 - Step 4: Simplify right side
920,013.90x = 650,184,239,346.48 - Step 5: Solve for x
x = 650,184,239,346.48/920,013.90 - Step 6: Final answer
x = 706,711.32
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.