Finding the Fourth Proportional to 7,139,838.36, 9,852,875.82 and 4,042,281.19
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Solution
The fourth proportional to 7,139,838.36, 9,852,875.82 and 4,042,281.19 is: 5,578,290.80
Step by Step Solution
- Step 1: Write the proportion equation
7,139,838.36 : 9,852,875.82 = 4,042,281.19 : x - Step 2: Convert to fraction form
7,139,838.36/9,852,875.82 = 4,042,281.19/x - Step 3: Cross multiply
7,139,838.36x = 9,852,875.82 × 4,042,281.19 - Step 4: Simplify right side
7,139,838.36x = 39,828,094,618,631.19 - Step 5: Solve for x
x = 39,828,094,618,631.19/7,139,838.36 - Step 6: Final answer
x = 5,578,290.80
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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.