Finding the Fourth Proportional to 689,634.21, 1,033,106.30 and 389,206.02
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Solution
The fourth proportional to 689,634.21, 1,033,106.30 and 389,206.02 is: 583,049.95
Step by Step Solution
- Step 1: Write the proportion equation
689,634.21 : 1,033,106.30 = 389,206.02 : x - Step 2: Convert to fraction form
689,634.21/1,033,106.30 = 389,206.02/x - Step 3: Cross multiply
689,634.21x = 1,033,106.30 × 389,206.02 - Step 4: Simplify right side
689,634.21x = 402,091,192,232.94 - Step 5: Solve for x
x = 402,091,192,232.94/689,634.21 - Step 6: Final answer
x = 583,049.95
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.