Finding the Fourth Proportional to 5,215,511.70, 7,823,267.55 and 3,955,799.70
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Solution
The fourth proportional to 5,215,511.70, 7,823,267.55 and 3,955,799.70 is: 5,933,699.55
Step by Step Solution
- Step 1: Write the proportion equation
5,215,511.70 : 7,823,267.55 = 3,955,799.70 : x - Step 2: Convert to fraction form
5,215,511.70/7,823,267.55 = 3,955,799.70/x - Step 3: Cross multiply
5,215,511.70x = 7,823,267.55 × 3,955,799.70 - Step 4: Simplify right side
5,215,511.70x = 30,947,279,427,309.73 - Step 5: Solve for x
x = 30,947,279,427,309.73/5,215,511.70 - Step 6: Final answer
x = 5,933,699.55
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Half scale
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Double scale
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Similar ratio
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.