Finding the Fourth Proportional to 469,909.15, 648,408.14 and 278,998.63
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Solution
The fourth proportional to 469,909.15, 648,408.14 and 278,998.63 is: 384,978.63
Step by Step Solution
- Step 1: Write the proportion equation
469,909.15 : 648,408.14 = 278,998.63 : x - Step 2: Convert to fraction form
469,909.15/648,408.14 = 278,998.63/x - Step 3: Cross multiply
469,909.15x = 648,408.14 × 278,998.63 - Step 4: Simplify right side
469,909.15x = 180,904,980,771.08 - Step 5: Solve for x
x = 180,904,980,771.08/469,909.15 - Step 6: Final answer
x = 384,978.63
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.