Finding the Fourth Proportional to 869,722.12, 1,305,028.50 and 396,346.60
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Solution
The fourth proportional to 869,722.12, 1,305,028.50 and 396,346.60 is: 594,722.84
Step by Step Solution
- Step 1: Write the proportion equation
869,722.12 : 1,305,028.50 = 396,346.60 : x - Step 2: Convert to fraction form
869,722.12/1,305,028.50 = 396,346.60/x - Step 3: Cross multiply
869,722.12x = 1,305,028.50 × 396,346.60 - Step 4: Simplify right side
869,722.12x = 517,243,608,878.10 - Step 5: Solve for x
x = 517,243,608,878.10/869,722.12 - Step 6: Final answer
x = 594,722.84
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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.