Finding the Fourth Proportional to 859,538.21, 1,186,194.75 and 515,430.17
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Solution
The fourth proportional to 859,538.21, 1,186,194.75 and 515,430.17 is: 711,312.82
Step by Step Solution
- Step 1: Write the proportion equation
859,538.21 : 1,186,194.75 = 515,430.17 : x - Step 2: Convert to fraction form
859,538.21/1,186,194.75 = 515,430.17/x - Step 3: Cross multiply
859,538.21x = 1,186,194.75 × 515,430.17 - Step 4: Simplify right side
859,538.21x = 611,400,553,137.48 - Step 5: Solve for x
x = 611,400,553,137.48/859,538.21 - Step 6: Final answer
x = 711,312.82
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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.