Finding the Fourth Proportional to 611,909.70, 917,864.55 and 471,941.70
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Solution
The fourth proportional to 611,909.70, 917,864.55 and 471,941.70 is: 707,912.55
Step by Step Solution
- Step 1: Write the proportion equation
611,909.70 : 917,864.55 = 471,941.70 : x - Step 2: Convert to fraction form
611,909.70/917,864.55 = 471,941.70/x - Step 3: Cross multiply
611,909.70x = 917,864.55 × 471,941.70 - Step 4: Simplify right side
611,909.70x = 433,178,556,096.74 - Step 5: Solve for x
x = 433,178,556,096.74/611,909.70 - Step 6: Final answer
x = 707,912.55
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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.