Finding the Fourth Proportional to 860,979.36, 1,187,656.74 and 538,129.14
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Solution
The fourth proportional to 860,979.36, 1,187,656.74 and 538,129.14 is: 742,308.97
Step by Step Solution
- Step 1: Write the proportion equation
860,979.36 : 1,187,656.74 = 538,129.14 : x - Step 2: Convert to fraction form
860,979.36/1,187,656.74 = 538,129.14/x - Step 3: Cross multiply
860,979.36x = 1,187,656.74 × 538,129.14 - Step 4: Simplify right side
860,979.36x = 639,112,700,111.40 - Step 5: Solve for x
x = 639,112,700,111.40/860,979.36 - Step 6: Final answer
x = 742,308.97
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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.