Finding the Fourth Proportional to 28,207,832.48, 42,310,971.12 and 18,964,656.80
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Solution
The fourth proportional to 28,207,832.48, 42,310,971.12 and 18,964,656.80 is: 28,446,462.40
Step by Step Solution
- Step 1: Write the proportion equation
28,207,832.48 : 42,310,971.12 = 18,964,656.80 : x - Step 2: Convert to fraction form
28,207,832.48/42,310,971.12 = 18,964,656.80/x - Step 3: Cross multiply
28,207,832.48x = 42,310,971.12 × 18,964,656.80 - Step 4: Simplify right side
28,207,832.48x = 802,413,046,165,511.62 - Step 5: Solve for x
x = 802,413,046,165,511.62/28,207,832.48 - Step 6: Final answer
x = 28,446,462.40
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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.