Finding the Fourth Proportional to 2,663,031.80, 3,994,547.70 and 2,220,164.30
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Solution
The fourth proportional to 2,663,031.80, 3,994,547.70 and 2,220,164.30 is: 3,330,246.45
Step by Step Solution
- Step 1: Write the proportion equation
2,663,031.80 : 3,994,547.70 = 2,220,164.30 : x - Step 2: Convert to fraction form
2,663,031.80/3,994,547.70 = 2,220,164.30/x - Step 3: Cross multiply
2,663,031.80x = 3,994,547.70 × 2,220,164.30 - Step 4: Simplify right side
2,663,031.80x = 8,868,552,198,187.11 - Step 5: Solve for x
x = 8,868,552,198,187.11/2,663,031.80 - Step 6: Final answer
x = 3,330,246.45
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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.