Finding the Fourth Proportional to 509,781.70, 764,672.55 and 385,365.70
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Solution
The fourth proportional to 509,781.70, 764,672.55 and 385,365.70 is: 578,048.55
Step by Step Solution
- Step 1: Write the proportion equation
509,781.70 : 764,672.55 = 385,365.70 : x - Step 2: Convert to fraction form
509,781.70/764,672.55 = 385,365.70/x - Step 3: Cross multiply
509,781.70x = 764,672.55 × 385,365.70 - Step 4: Simplify right side
509,781.70x = 294,678,572,501.54 - Step 5: Solve for x
x = 294,678,572,501.54/509,781.70 - Step 6: Final answer
x = 578,048.55
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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.