Finding the Fourth Proportional to 712,709.26, 983,539.02 and 390,430.96
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Solution
The fourth proportional to 712,709.26, 983,539.02 and 390,430.96 is: 538,794.86
Step by Step Solution
- Step 1: Write the proportion equation
712,709.26 : 983,539.02 = 390,430.96 : x - Step 2: Convert to fraction form
712,709.26/983,539.02 = 390,430.96/x - Step 3: Cross multiply
712,709.26x = 983,539.02 × 390,430.96 - Step 4: Simplify right side
712,709.26x = 384,004,083,776.06 - Step 5: Solve for x
x = 384,004,083,776.06/712,709.26 - Step 6: Final answer
x = 538,794.86
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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.