Finding the Fourth Proportional to 19,318,318.79, 28,990,764.11 and 7,958,767.41
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Solution
The fourth proportional to 19,318,318.79, 28,990,764.11 and 7,958,767.41 is: 11,943,624.66
Step by Step Solution
- Step 1: Write the proportion equation
19,318,318.79 : 28,990,764.11 = 7,958,767.41 : x - Step 2: Convert to fraction form
19,318,318.79/28,990,764.11 = 7,958,767.41/x - Step 3: Cross multiply
19,318,318.79x = 28,990,764.11 × 7,958,767.41 - Step 4: Simplify right side
19,318,318.79x = 230,730,748,609,562.59 - Step 5: Solve for x
x = 230,730,748,609,562.59/19,318,318.79 - Step 6: Final answer
x = 11,943,624.66
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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.