Finding the Fourth Proportional to 409,390.90, 611,207.68 and 312,822.70
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Solution
The fourth proportional to 409,390.90, 611,207.68 and 312,822.70 is: 467,034.41
Step by Step Solution
- Step 1: Write the proportion equation
409,390.90 : 611,207.68 = 312,822.70 : x - Step 2: Convert to fraction form
409,390.90/611,207.68 = 312,822.70/x - Step 3: Cross multiply
409,390.90x = 611,207.68 × 312,822.70 - Step 4: Simplify right side
409,390.90x = 191,199,634,408.26 - Step 5: Solve for x
x = 191,199,634,408.26/409,390.90 - Step 6: Final answer
x = 467,034.41
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.