Finding the Fourth Proportional to 413,501.10, 620,251.65 and 312,461.70
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Solution
The fourth proportional to 413,501.10, 620,251.65 and 312,461.70 is: 468,692.55
Step by Step Solution
- Step 1: Write the proportion equation
413,501.10 : 620,251.65 = 312,461.70 : x - Step 2: Convert to fraction form
413,501.10/620,251.65 = 312,461.70/x - Step 3: Cross multiply
413,501.10x = 620,251.65 × 312,461.70 - Step 4: Simplify right side
413,501.10x = 193,804,884,986.81 - Step 5: Solve for x
x = 193,804,884,986.81/413,501.10 - Step 6: Final answer
x = 468,692.55
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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.