Finding the Fourth Proportional to 686,709.60, 1,031,230.80 and 509,416.80
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Solution
The fourth proportional to 686,709.60, 1,031,230.80 and 509,416.80 is: 764,990.46
Step by Step Solution
- Step 1: Write the proportion equation
686,709.60 : 1,031,230.80 = 509,416.80 : x - Step 2: Convert to fraction form
686,709.60/1,031,230.80 = 509,416.80/x - Step 3: Cross multiply
686,709.60x = 1,031,230.80 × 509,416.80 - Step 4: Simplify right side
686,709.60x = 525,326,294,197.44 - Step 5: Solve for x
x = 525,326,294,197.44/686,709.60 - Step 6: Final answer
x = 764,990.46
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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.