Finding the Fourth Proportional to 790,415.36, 1,185,845.08 and 317,432.88
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Solution
The fourth proportional to 790,415.36, 1,185,845.08 and 317,432.88 is: 476,238.49
Step by Step Solution
- Step 1: Write the proportion equation
790,415.36 : 1,185,845.08 = 317,432.88 : x - Step 2: Convert to fraction form
790,415.36/1,185,845.08 = 317,432.88/x - Step 3: Cross multiply
790,415.36x = 1,185,845.08 × 317,432.88 - Step 4: Simplify right side
790,415.36x = 376,426,218,978.23 - Step 5: Solve for x
x = 376,426,218,978.23/790,415.36 - Step 6: Final answer
x = 476,238.49
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.