Finding the Fourth Proportional to 859,911.99, 1,290,386.40 and 299,340.15
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Solution
The fourth proportional to 859,911.99, 1,290,386.40 and 299,340.15 is: 449,190.69
Step by Step Solution
- Step 1: Write the proportion equation
859,911.99 : 1,290,386.40 = 299,340.15 : x - Step 2: Convert to fraction form
859,911.99/1,290,386.40 = 299,340.15/x - Step 3: Cross multiply
859,911.99x = 1,290,386.40 × 299,340.15 - Step 4: Simplify right side
859,911.99x = 386,264,458,533.96 - Step 5: Solve for x
x = 386,264,458,533.96/859,911.99 - Step 6: Final answer
x = 449,190.69
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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.