Finding the Fourth Proportional to 646,719.12, 892,499.99 and 360,239.40
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Solution
The fourth proportional to 646,719.12, 892,499.99 and 360,239.40 is: 497,145.75
Step by Step Solution
- Step 1: Write the proportion equation
646,719.12 : 892,499.99 = 360,239.40 : x - Step 2: Convert to fraction form
646,719.12/892,499.99 = 360,239.40/x - Step 3: Cross multiply
646,719.12x = 892,499.99 × 360,239.40 - Step 4: Simplify right side
646,719.12x = 321,513,659,096.41 - Step 5: Solve for x
x = 321,513,659,096.41/646,719.12 - Step 6: Final answer
x = 497,145.75
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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.