Finding the Fourth Proportional to 929,890.28, 1,283,291.21 and 516,428.96
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Solution
The fourth proportional to 929,890.28, 1,283,291.21 and 516,428.96 is: 712,695.63
Step by Step Solution
- Step 1: Write the proportion equation
929,890.28 : 1,283,291.21 = 516,428.96 : x - Step 2: Convert to fraction form
929,890.28/1,283,291.21 = 516,428.96/x - Step 3: Cross multiply
929,890.28x = 1,283,291.21 × 516,428.96 - Step 4: Simplify right side
929,890.28x = 662,728,739,832.06 - Step 5: Solve for x
x = 662,728,739,832.06/929,890.28 - Step 6: Final answer
x = 712,695.63
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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.