Finding the Fourth Proportional to 405,780.08, 608,670.36 and 316,900.40
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Solution
The fourth proportional to 405,780.08, 608,670.36 and 316,900.40 is: 475,350.79
Step by Step Solution
- Step 1: Write the proportion equation
405,780.08 : 608,670.36 = 316,900.40 : x - Step 2: Convert to fraction form
405,780.08/608,670.36 = 316,900.40/x - Step 3: Cross multiply
405,780.08x = 608,670.36 × 316,900.40 - Step 4: Simplify right side
405,780.08x = 192,887,880,552.14 - Step 5: Solve for x
x = 192,887,880,552.14/405,780.08 - Step 6: Final answer
x = 475,350.79
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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.