Finding the Fourth Proportional to 521,109.70, 781,664.55 and 403,011.70
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Solution
The fourth proportional to 521,109.70, 781,664.55 and 403,011.70 is: 604,517.55
Step by Step Solution
- Step 1: Write the proportion equation
521,109.70 : 781,664.55 = 403,011.70 : x - Step 2: Convert to fraction form
521,109.70/781,664.55 = 403,011.70/x - Step 3: Cross multiply
521,109.70x = 781,664.55 × 403,011.70 - Step 4: Simplify right side
521,109.70x = 315,019,959,125.24 - Step 5: Solve for x
x = 315,019,959,125.24/521,109.70 - Step 6: Final answer
x = 604,517.55
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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.