Finding the Fourth Proportional to 687,634.42, 1,031,458.71 and 207,866.15
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Solution
The fourth proportional to 687,634.42, 1,031,458.71 and 207,866.15 is: 311,801.37
Step by Step Solution
- Step 1: Write the proportion equation
687,634.42 : 1,031,458.71 = 207,866.15 : x - Step 2: Convert to fraction form
687,634.42/1,031,458.71 = 207,866.15/x - Step 3: Cross multiply
687,634.42x = 1,031,458.71 × 207,866.15 - Step 4: Simplify right side
687,634.42x = 214,405,350,931.67 - Step 5: Solve for x
x = 214,405,350,931.67/687,634.42 - Step 6: Final answer
x = 311,801.37
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.