Finding the Fourth Proportional to 1,165,960,868.40, 1,749,031,720.20 and 389,609,305.20
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Solution
The fourth proportional to 1,165,960,868.40, 1,749,031,720.20 and 389,609,305.20 is: 584,444,171.11
Step by Step Solution
- Step 1: Write the proportion equation
1,165,960,868.40 : 1,749,031,720.20 = 389,609,305.20 : x - Step 2: Convert to fraction form
1,165,960,868.40/1,749,031,720.20 = 389,609,305.20/x - Step 3: Cross multiply
1,165,960,868.40x = 1,749,031,720.20 × 389,609,305.20 - Step 4: Simplify right side
1,165,960,868.40x = 681,439,033,279,882,752 - Step 5: Solve for x
x = 681,439,033,279,882,752/1,165,960,868.40 - Step 6: Final answer
x = 584,444,171.11
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.