Finding the Fourth Proportional to 612,682.20, 919,898.10 and 346,961.70
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Solution
The fourth proportional to 612,682.20, 919,898.10 and 346,961.70 is: 520,937.95
Step by Step Solution
- Step 1: Write the proportion equation
612,682.20 : 919,898.10 = 346,961.70 : x - Step 2: Convert to fraction form
612,682.20/919,898.10 = 346,961.70/x - Step 3: Cross multiply
612,682.20x = 919,898.10 × 346,961.70 - Step 4: Simplify right side
612,682.20x = 319,169,408,602.77 - Step 5: Solve for x
x = 319,169,408,602.77/612,682.20 - Step 6: Final answer
x = 520,937.95
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1.5x scale
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.