Finding the Fourth Proportional to 859,538.09, 1,186,194.57 and 515,430.04
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Solution
The fourth proportional to 859,538.09, 1,186,194.57 and 515,430.04 is: 711,312.65
Step by Step Solution
- Step 1: Write the proportion equation
859,538.09 : 1,186,194.57 = 515,430.04 : x - Step 2: Convert to fraction form
859,538.09/1,186,194.57 = 515,430.04/x - Step 3: Cross multiply
859,538.09x = 1,186,194.57 × 515,430.04 - Step 4: Simplify right side
859,538.09x = 611,400,314,887.94 - Step 5: Solve for x
x = 611,400,314,887.94/859,538.09 - Step 6: Final answer
x = 711,312.65
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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.