Finding the Fourth Proportional to 992,689.86, 1,488,894.21 and 318,682.42
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Solution
The fourth proportional to 992,689.86, 1,488,894.21 and 318,682.42 is: 477,978.49
Step by Step Solution
- Step 1: Write the proportion equation
992,689.86 : 1,488,894.21 = 318,682.42 : x - Step 2: Convert to fraction form
992,689.86/1,488,894.21 = 318,682.42/x - Step 3: Cross multiply
992,689.86x = 1,488,894.21 × 318,682.42 - Step 4: Simplify right side
992,689.86x = 474,484,406,244.55 - Step 5: Solve for x
x = 474,484,406,244.55/992,689.86 - Step 6: Final answer
x = 477,978.49
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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.