Finding the Fourth Proportional to 687,534.24, 948,807.36 and 381,630.33
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Solution
The fourth proportional to 687,534.24, 948,807.36 and 381,630.33 is: 526,655.47
Step by Step Solution
- Step 1: Write the proportion equation
687,534.24 : 948,807.36 = 381,630.33 : x - Step 2: Convert to fraction form
687,534.24/948,807.36 = 381,630.33/x - Step 3: Cross multiply
687,534.24x = 948,807.36 × 381,630.33 - Step 4: Simplify right side
687,534.24x = 362,093,665,903.23 - Step 5: Solve for x
x = 362,093,665,903.23/687,534.24 - Step 6: Final answer
x = 526,655.47
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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.