Finding the Fourth Proportional to 697,621.05, 962,458.74 and 439,428.69
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Solution
The fourth proportional to 697,621.05, 962,458.74 and 439,428.69 is: 606,248.88
Step by Step Solution
- Step 1: Write the proportion equation
697,621.05 : 962,458.74 = 439,428.69 : x - Step 2: Convert to fraction form
697,621.05/962,458.74 = 439,428.69/x - Step 3: Cross multiply
697,621.05x = 962,458.74 × 439,428.69 - Step 4: Simplify right side
697,621.05x = 422,931,983,297.25 - Step 5: Solve for x
x = 422,931,983,297.25/697,621.05 - Step 6: Final answer
x = 606,248.88
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1.5x scale
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.