Finding the Fourth Proportional to 10,204,852.50, 15,307,278.75 and 4,221,220.50
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Solution
The fourth proportional to 10,204,852.50, 15,307,278.75 and 4,221,220.50 is: 6,331,830.75
Step by Step Solution
- Step 1: Write the proportion equation
10,204,852.50 : 15,307,278.75 = 4,221,220.50 : x - Step 2: Convert to fraction form
10,204,852.50/15,307,278.75 = 4,221,220.50/x - Step 3: Cross multiply
10,204,852.50x = 15,307,278.75 × 4,221,220.50 - Step 4: Simplify right side
10,204,852.50x = 64,615,398,858,714.38 - Step 5: Solve for x
x = 64,615,398,858,714.38/10,204,852.50 - Step 6: Final answer
x = 6,331,830.75
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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.