Finding the Fourth Proportional to 712,754.20, 983,625.24 and 390,464.20
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Solution
The fourth proportional to 712,754.20, 983,625.24 and 390,464.20 is: 538,853.99
Step by Step Solution
- Step 1: Write the proportion equation
712,754.20 : 983,625.24 = 390,464.20 : x - Step 2: Convert to fraction form
712,754.20/983,625.24 = 390,464.20/x - Step 3: Cross multiply
712,754.20x = 983,625.24 × 390,464.20 - Step 4: Simplify right side
712,754.20x = 384,070,442,436.41 - Step 5: Solve for x
x = 384,070,442,436.41/712,754.20 - Step 6: Final answer
x = 538,853.99
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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.