Finding the Fourth Proportional to 1,381,853,207.70, 2,072,779,811.55 and 449,174,252.70
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Solution
The fourth proportional to 1,381,853,207.70, 2,072,779,811.55 and 449,174,252.70 is: 673,761,379.05
Step by Step Solution
- Step 1: Write the proportion equation
1,381,853,207.70 : 2,072,779,811.55 = 449,174,252.70 : x - Step 2: Convert to fraction form
1,381,853,207.70/2,072,779,811.55 = 449,174,252.70/x - Step 3: Cross multiply
1,381,853,207.70x = 2,072,779,811.55 × 449,174,252.70 - Step 4: Simplify right side
1,381,853,207.70x = 931,039,322,864,617,984 - Step 5: Solve for x
x = 931,039,322,864,617,984/1,381,853,207.70 - Step 6: Final answer
x = 673,761,379.05
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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.