Finding the Fourth Proportional to 687,530.12, 948,801.67 and 381,626.19
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Solution
The fourth proportional to 687,530.12, 948,801.67 and 381,626.19 is: 526,649.75
Step by Step Solution
- Step 1: Write the proportion equation
687,530.12 : 948,801.67 = 381,626.19 : x - Step 2: Convert to fraction form
687,530.12/948,801.67 = 381,626.19/x - Step 3: Cross multiply
687,530.12x = 948,801.67 × 381,626.19 - Step 4: Simplify right side
687,530.12x = 362,087,565,433.67 - Step 5: Solve for x
x = 362,087,565,433.67/687,530.12 - Step 6: Final answer
x = 526,649.75
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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.