Finding the Fourth Proportional to 12,885,748.68, 17,781,878.31 and 7,084,486.05
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Solution
The fourth proportional to 12,885,748.68, 17,781,878.31 and 7,084,486.05 is: 9,776,340.67
Step by Step Solution
- Step 1: Write the proportion equation
12,885,748.68 : 17,781,878.31 = 7,084,486.05 : x - Step 2: Convert to fraction form
12,885,748.68/17,781,878.31 = 7,084,486.05/x - Step 3: Cross multiply
12,885,748.68x = 17,781,878.31 × 7,084,486.05 - Step 4: Simplify right side
12,885,748.68x = 125,975,468,829,992.56 - Step 5: Solve for x
x = 125,975,468,829,992.56/12,885,748.68 - Step 6: Final answer
x = 9,776,340.67
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.