Finding the Fourth Proportional to 6,643,116.70, 9,964,675.05 and 2,155,392.70
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Solution
The fourth proportional to 6,643,116.70, 9,964,675.05 and 2,155,392.70 is: 3,233,089.05
Step by Step Solution
- Step 1: Write the proportion equation
6,643,116.70 : 9,964,675.05 = 2,155,392.70 : x - Step 2: Convert to fraction form
6,643,116.70/9,964,675.05 = 2,155,392.70/x - Step 3: Cross multiply
6,643,116.70x = 9,964,675.05 × 2,155,392.70 - Step 4: Simplify right side
6,643,116.70x = 21,477,787,860,642.14 - Step 5: Solve for x
x = 21,477,787,860,642.14/6,643,116.70 - Step 6: Final answer
x = 3,233,089.05
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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.