Finding the Fourth Proportional to 19,485,416.80, 29,229,968.40 and 5,301,992.80
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Solution
The fourth proportional to 19,485,416.80, 29,229,968.40 and 5,301,992.80 is: 7,953,490.74
Step by Step Solution
- Step 1: Write the proportion equation
19,485,416.80 : 29,229,968.40 = 5,301,992.80 : x - Step 2: Convert to fraction form
19,485,416.80/29,229,968.40 = 5,301,992.80/x - Step 3: Cross multiply
19,485,416.80x = 29,229,968.40 × 5,301,992.80 - Step 4: Simplify right side
19,485,416.80x = 154,977,082,001,027.50 - Step 5: Solve for x
x = 154,977,082,001,027.50/19,485,416.80 - Step 6: Final answer
x = 7,953,490.74
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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.