Finding the Fourth Proportional to 13,490,878.56, 20,231,786.30 and 4,390,835.99
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Solution
The fourth proportional to 13,490,878.56, 20,231,786.30 and 4,390,835.99 is: 6,584,779.12
Step by Step Solution
- Step 1: Write the proportion equation
13,490,878.56 : 20,231,786.30 = 4,390,835.99 : x - Step 2: Convert to fraction form
13,490,878.56/20,231,786.30 = 4,390,835.99/x - Step 3: Cross multiply
13,490,878.56x = 20,231,786.30 × 4,390,835.99 - Step 4: Simplify right side
13,490,878.56x = 88,834,455,421,146.06 - Step 5: Solve for x
x = 88,834,455,421,146.06/13,490,878.56 - Step 6: Final answer
x = 6,584,779.12
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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.