Finding the Fourth Proportional to 465,618.81, 698,317.43 and 128,652.08
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Solution
The fourth proportional to 465,618.81, 698,317.43 and 128,652.08 is: 192,947.50
Step by Step Solution
- Step 1: Write the proportion equation
465,618.81 : 698,317.43 = 128,652.08 : x - Step 2: Convert to fraction form
465,618.81/698,317.43 = 128,652.08/x - Step 3: Cross multiply
465,618.81x = 698,317.43 × 128,652.08 - Step 4: Simplify right side
465,618.81x = 89,839,985,734.91 - Step 5: Solve for x
x = 89,839,985,734.91/465,618.81 - Step 6: Final answer
x = 192,947.50
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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.